31. Lefties Find the sample size needed to estimate the percentage of California residents who are left-handed. Use a margin of error of three percentage points, and use a confidence level of 99%. a. Assume that pn and qn are unknown. b. Assume that based on prior studies, about 10% of Californians are left-handed. c. How do the results from parts (a) and (b) change if the entire United States is used instead of California

Answers

Answer 1

a. The required sample size when pn and qn are unknown then n = 1844

b. The required sample size when about 10% of Californians are left-handed is n = 664

c. There would have been no effect on parts a and b if entire US has been chosen

According to statement

a. No estimate of proportion is given so we will assume:  

{p} = {q} = 0.5

For 99% confidence, z = 2.576

E = 0.03  

Hence, Required sample size  

n = (0.5)*(0.5)*(2.576/0.03)^2  

n = 1844

b. {p} = 0.10

{q} = 1 - {p}

{q} = 1 - 0.10

{q} = 0.90  

For 99% confidence, z = 2.576

E = 0.03

Hence,  Required sample size  n = (0.1)*(0.9)*(2.576/0.03)^2  = 664

c. There would have been no effect on parts a and b if entire US has been chosen because minimum sample size required is not dependent on population size.

Learn more about PERCENTAGE here https://brainly.com/question/24304697

#SPJ4


Related Questions

A boy had a packet of 320 candies with 2 different flavours. 7/16 were orange flavour and the rest were lemon. He gave his friend 30 orange candies and some lemon ones. As a result, the ratio of the number of orange candies to that of lemon became 11:15. How many lemon candies did he give his friend

Answers

30 lemon candies he give his friend.

It is given that a boy had 320 candies. There were 2 flavors. 7/16 were orange flavor and the rest were lemon. He gave his friend 30 orange candies and some lemon ones.

320 (7/16)  =   140  were orange

320 - 140  =  180  were lemon

Let x be the number of lemon ones he gave  away

So,

[ 140 - 30 ]  / [ 180 - x ] =  11/15

110  =  (11/15) ( 180 - x )

(15/11) (110)  = 180 - x

150  = 180  - x

x = 180  - 150  =   30

Learn more about word problems here: https://brainly.com/question/20521181

#SPJ4

Triangle GHI is rotated 90Degrees clockwise and then reflected over the y-axis. Which congruency statement is true?

On a coordinate plane, triangle G H I is rotated 90 degrees clockwise and then is reflected over the y-axis.
Angle G is congruent to angle H is congruent to angle I
Angle G double-prime is congruent to angle H double-prime is congruent to angle I double-prime
Triangle G H I is congruent to triangle G double-prime H double-prime I double-prime
Triangle G H I is congruent to triangle I H G

Answers

The congruency statement which is true among the answer choices is;

On a coordinate plane, triangle G H I is rotated 90 degrees clockwise and then is reflected over the y-axis.Triangle G H I is congruent to triangle G double-prime H double-prime I double-prime.

Which congruency statement is true?

According to the task content, the initial transformation is; Triangle GHI is rotated 90Degrees clockwise and then reflected over the y-axis.

On this note, the congruency which are true regarding the transformation are;

On a coordinate plane, triangle G H I is rotated 90 degrees clockwise and then is reflected over the y-axis.Triangle G H I is congruent to triangle G double-prime H double-prime I double-prime.

This follows from the fact that the transformation.does not involved dilation by means of a scale factor and hence, size remains equal and all angle measures remain the same.

Read more on triangle congruence;

https://brainly.com/question/2102943

#SPJ1

Identify the term that means the difference of the minimum and maximum values of a data set and the term that means the difference of the first quartile and third quartile of a data set.

Answers

Answer:

Range:  Difference of minimum and maximum values of a data set

Interquartile Range:  Difference of first quartile and third quartile of a data set

Step-by-step explanation:

Answer: what he said

Step-by-step explanation:

The jones family and the Connor family both bought the same boxed package of sugar cubes at the store, in which the cubes were arranged in 5 layers. After drinking of 61 cups of tea, the Joneses found that they were out of sugar. The Connors' sugar box was enough to last them thought 88 cups of tea. Both families put either 2 or 3 pieces of sugar per cup. How many sugar cubes were in the box

Answers

The number of sugar cubes in the box is 180

How to determine the number of sugar cubes?

The given parameters are:

Layers = 5Pieces = 2 or 3Cups of tea = 61 and 88

Multiply 61 and 88 by 2 and 3

61 * 2 = 122

61 * 3 = 183

88 * 2 = 176

88 * 3 = 264

The number of sugar cubes cannot be 122 and 264, because they are out of the range

So, we have:

183 and 176

There are 5 layers.

This means that the number of sugar cubes is divisible by 5.

The only number between 176 and 183 that is divisible by 5 is 180

Hence, the number of sugar cubes is 180

Read more about sequence at:

https://brainly.com/question/21961097

#SPJ1

Question 4(Multiple Choice Worth 1 points)
(08.03 LC)

What are the exact solutions of x2 − 3x − 5 = 0, where x equals negative b plus or minus the square root of b squared minus 4 times a times c all over 2 times a?

x = the quantity of negative 3 plus or minus the square root of 29 all over 2
x = the quantity of 3 plus or minus the square root of 29 all over 2
x = the quantity of 3 plus or minus the square root of 11 all over 2
x = the quantity of negative 3 plus or minus the square root of 11 all over 2

Answers

i know its the frist or second one i did the test i am also in flvs :)

It’s the quaintly of negative 3 plus or minus the quarter root of 29 all over 2

Nathan received $1,500 dollars for his birthday. He saves 3/5 of his money. 6/20 of his money was used to buy a new game. How much money does he have left?

Answers

Answer:

$150

Step-by-step explanation:

→ Find 3/5 of 1500

( 1500 ÷ 5 ) × 3 = 900

→ Find 6/20 of 1500

( 1500 ÷ 20 ) × 6 = 450

→ Find the sum of the 2 numbers

900 + 450 = 1350

→ Minus it from the original 1500

1500 - 1350 = $150

Box of 24 chocolate contains 6 cream-filled. What is the probability of randomly selecting a cream filled
Chocolate

Answers

The probability of randomly selecting a cream filled

Chocolate is 1/4

Probability is the likelihood of an event will occur Probability of an event is find out by divide the number of favorable outcomes by the total number of possible outcomes. The simplest example is flipping of a coin. There are only two possible outcomes when you flip a coin. It wiil be either heads or tails.Total probability is always lie between 0 and 1

Let E be the event of selecting cream filled chocolate.

Number of favourable outcome = 6

Total number of possible outcome = 24

Probability if selecting a cream filled chocolate = 6/24

= 1 / 4

Hence, the probability of randomly selecting a cream filled chocolate is 1/4

Learn more about probability here:

https://brainly.com/question/24756209

#SPJ10

what is the midpoint of the line segment that joins -3/4 and 2 1/2

Answers

The mid point between the two points is at 13/8 .

What is a Line Segment ?

A line segment is  a line of fixed measure .

The line segment extends from (-3/4) to  [tex]\rm 2 \dfrac{1}{2}[/tex]

i.e the line extends form -3/4 to 5/2

To find the mid point , the total distance needs to be determined

So the distance between the two point is

(5/2) + (3/4) = 13/8

The mid point is at half the distance of this

so it is at 13/8 from both the points

Any point at 13/8 distance from 5/2  towards (-3/4) will be

= (5/2) - (13/8)

= 7/8

So the mid point between the two points is at 13/8 .

To know more about Line Segment.

https://brainly.com/question/25727583

#SPJ1

Pedro Fernández es gerente de Avon Chic, Pedro estaba interesado en las tasas de rendimiento de los últimos cinco años de dos diferentes fondos mutuos. Trujix, Inc., mostro un periodo de cinco años, tasas de rendimiento del 12; 10; 3; 9 y 11%, mientras que Fondo Corporation arrojo 13; 12:14:10 y 6%. Un cliente se acercó a Pedro y expreso su interés uno de estos fondos mutuos. ¿cuál debería escoger Pedro para su cliente?

Answers

Pedro Fernández should advice his client to go with the second mutual fund named as Fund Corporation. This is because, it showed an higher average return over the five-year period at an average of 11% beating Trujix Inc by 3%.

What is the calculation that supports the above?

To get the better fund, Pedro must calculate a simple average of the interest rates of the various funds over the past 5 year period.

Trujix Inc 5-Year Average

(12 + 10+ 3 +9 + 11)/5

= 45/5

=9%

Fund Corporation 5-Year Average

(13 + 12 +14 + 10+ 6)/5

= 55/5

= 11%

Hence, the better investment is the one by Fund corporation.

Full Question

Pedro Fernández is a manager at Avon Chic, Pedro was interested in the rates of return for the last five years of two different mutual funds. Trujix, Inc., showed a five-year period, rates of return of 12; 10; 3; 9 and 11%, while Fund Corporation showed 13; 12:14:10 and 6%. A client approached Pedro and expressed his interest in one of these mutual funds. Which one should Pedro choose for his client?

Learn more about averges at;
https://brainly.com/question/20118982
#SPJ1

Samarium-146 has a half-life of 103.5 million years. after 1.035 billion years, how much samarium-146 will remain from a 205-g sample?

Answers

Answer: 0.200 g

Given: Half life of Sm-146 = t1/2 = 103.5 million years

Time period, t = 1.035 billion years = 1035 million years

The original mass of the sample, [A]₀ = 205 g

To determine:

Amount of sample after t = 1035 million years

Explanation:

The rate of radioactive decay is given as:

Answer:

A: 0.200 g.

Step-by-step explanation:

Find x
Help me please thank u

Answers

Step-by-step explanation:

ATTACHED IS THE SOLUTION!!!

A bag contains 14 good eggs and 7 bad ones. if one egg is picked at random fr the bag what is the probability that it is goods​

Answers

Answer:

2/3

Step-by-step explanation:

expected over total

14/14+7 = 14/21 = 2/3

[tex]bad \: eggies = 7 \\ good \: eggies = 14 \\ total \: number \: of \: eggs = 21[/tex]

[tex]let \: event \: a = getting \: a \: good \: egg[/tex]

[tex]p(a) = \frac{number \: of \: good \: eggs}{total \: number \: of \: eggs} = \frac{14}{21} = \frac{2}{3} [/tex]

What does it mean for an event to be​ unusual? why should the cutoff for identifying unusual events not always be​ 0. 05?.

Answers

An unusual event is an occurrence that has a low probability of happening. The cutoff for identifying unusual events not always be​ 0.05, because it is not always a good idea to utilize the same cutoff to spot unexpected occurrences.

What is an unusual event?

An unusual event is an occurrence that has a low probability of happening.

If an event is improbable, its likelihood is zero. If an occurrence is unavoidable, its probability is one.

The probability of an event happening increases as it gets closer to 1. An occurrence that has a probability of 0.375, for instance, is more likely to happen than one with a probability of 0.125.

The less likely an event is to occur, the closer the probability is to 0. An unusual event is what this kind of event falls under. A probability of 5%, or 0.05, is typically regarded as unusual event.

Learn more about unusual events here:

https://brainly.com/question/13839270

#SPJ4

Abbot Tools is designing a new toolbox. The length of the toolbox will be three times its width, w, and the length of the diagonal of the top cover will be 30 inches.

Use this information to determine the length, l, of the box. Select the correct answer from the drop-down menu.

Answers

The length and width of the toolbox given the diagonal is 45 inches and 15 inches respectively.

Triangle

Width of the triangle = wLength of the triangle = 3wDiagonal = 30 inches

Hypotenuse ² = opposite ² + adjacent ²

30² = w² + (3w²)

30² = 4w²

900 = 4w²

w² = 900/4

= 225

w = √225

w = 15

Therefore,

Width of the triangle = w

= 15 inches

Length of the triangle = 3w

= 3(15)

= 45 inches

Learn more about triangles:

https://brainly.com/question/24382052

#SPJ1

Knowing that sin 30° = 1, what is a?
OA. 3.5
OB. 14
OC. 12.12
OD. 7
30⁰
7
a
60⁰

Answers

Answer:

B

Step-by-step explanation:

sin30° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{7}{a}[/tex] = [tex]\frac{1}{2}[/tex] ( cross- multiply )

a = 7 × 2 = 14

Which linear function has the same y-intercept as the one that is represented by the graph? On a coordinate plane, a line goes through points (negative 4, 0) and (0, 3). a y = 2 x minus 4 b y = 2 x minus 3 c y = 2 x + 3 d y = 2 x + 4

Answers

The line which is having same y intercept as the line which passes through points (-4,0) and (0,3) is y=2x+3.

Given Points through which the line passes through are (-4,0) and (0,3)

We have to find the equation whose y intercept is equal to the y intercept of the line whose points given above.

First of all we have to find the y intercept of the line which passes through (-4,0) and (0,3). Equation of line is :

y-y1=(y2-y1)/(x2-x1)*(x-x1)

y-0=(3-0)/(0+4)  *(x+4)

y=3/4(x+4)

y -intercept exists where x=0

put x=0

y=3

So the options are:

y=2x-4y=2x-3y=2x+3y=2x+4

By putting the value of x in all options we will find

y=-4

y=-3

y=3

y=4

So the third option is correct.

Hence the line whose y-intercept matched with the given line is y=2x+3.

Learn more about line at https://brainly.com/question/13763238

#SPJ10

Answer:

a

Step-by-step explanation:

does 3:3 or any full ratio equal 1:1?

Answers

Answer:

yes

_____________________________

you can look at 3:3 as 3/3 which is 1

and 1:1 = 1/1 which is also 1

the ratio sign also means divide.

_____________________________

hope this helps :)

WHICE group of domain-specific words belongs only to math domain

Answers

Answer:

The major field of anthroplogy and evolutionary and paleo anthropological perspectives on the origin of humankind

If 9: x= x4, then x=

Answers

Answer:

x = ±6

Step-by-step explanation:

9 : x = x : 4

9/x = x/4

Cross multiply.

x² = 9 × 4

x² = 36

x = ±√36

x = ±6

A correlation coefficient of 0.08 indicates strong positive correlation. Group startsTrue or False

Answers

Since the correlation coefficient has an absolute value that is less than 0.6, it is not a strong relationship, hence the statement is False.

What is a correlation coefficient?

It is an index that measures correlation between two variables, assuming values between -1 and 1.If it is positive, the relation is positive, that is, they are direct proportional. If it is negative, they are inverse proportional.If the absolute value of the correlation coefficient is greater than 0.6, the relationship is strong.

In this problem, the correlation coefficient is of 0.08, hence:

The coefficient is positive, hence the is a positive correlation.The coefficient is of 0.08, which is less than 0.6, hence the correlation is not strong.

Thus, the given statement is False.

More can be learned about correlation coefficients at https://brainly.com/question/25815006

#SPJ1

? Question
What are coordinates of the point representing the location of the other end of the string of buoys?
Type the correct answer in each box. Use numerals instead of words.

Answers

See below for the explanation on how to determine the coordinates.

How to determine the coordinates?

The question is incomplete, and the missing parameters cannot be found.

So, I will give a general explanation on how to determine coordinates.

Assume that the start point of the buoy is

(x, y)

And the length of the buoy is k.

Depending on the position of the bouy on the coordinate plane, the endpoint can be any of the following coordinates (x - h, y), (x + h, y), (x, y + h) and (x, y - h)

Read more about coordinates at

https://brainly.com/question/17206319

#SPJ1

( this is my summer math homework, please help!)
Find the selling price of each item.

1. Original price of a bunny: $46.00

Text: 2%

2. Original price of a CD: $14.99

Tax: 2%

3. Original price of a CD: $16.50

Tax: 4%

4. Original price of a car: $19,500.00

Tax: 4%

Answers

Using proportions, the selling prices are given as follows:

1. $46.92.

2. $15.29.

3. $17.16.

4. $20,280.

What is a proportion?

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

To find the selling prices, we have to multiply the original prices by either 1.02(2% sales tax) or 1.04(4% sales tax), hence they are given as follows:

1. 46 x 1.02 = $46.92.2. 14.99 x 1.02 = $15.29.3. 16.50 x 1.04 = $17.16.4. 19500 x 1.04 = $20,280.

More can be learned about proportions at https://brainly.com/question/24372153

#SPJ1

The average monthly temperature T(m), in degrees Celsius, in a particular city varies according to the model T of m equals 4 times sine of the quantity pi over 6 times m end quantity plus 2 comma where m represents the months of the year and January begins at m = 0. Between what months will the temperature be below 0°C?

Answers

The months with temperature below 0° is August and October.

GIven,

T(m) = 4 sin (π/6 m)₊2

In the above equation, T(m) is the average temperature in a month in degrees Fahrenheit, and m is the month of the year.

T(8) = 4 sin (8π/6 m)₊2

       = 4 sin (4π/3 )₊2

       = 4 sin (π₊π/3 )₊2

       = ₋4 sin π/3 ₊2

       = ₋4×√3/2 ₊2

       = ₋2√3 ₊ 2 <0

The function for the average monthly temperature, in m months from january is given by

T(0) = 4 sin(10π/6) ₊ 2

       = 4 sin(5π/3) ₊ 2

       = 4 sin(2π ₋ π/3) ₊ 2

       = - 4sin π/3 ₊ 2 = ₋4 × √3/2 ₊ 2

        = ₋2√3 ₊2<0

we can notice that after january, from august till october the months will face temperature below 0 degrees.

So the answer is August and October.

Your question is incomplete. Please find the missing content here.

The average monthly temperature T(m), in degrees Celsius, in a particular city varies according to the model T of m equals 4 times sine of the quantity pi over 6 times m end quantity plus 2 comma where m represents the months of the year and January begins at m = 0. Between what months will the temperature be below 0°C?

July and NovemberJuly and OctoberAugust and NovemberAugust and October

Learn more about "temperature problems" here-

brainly.com/question/25677592

#SPJ10

What is the answer, been stuck for 20 minutes.

Answers

Answer:

y= -1/2x - 4 ?

Step-by-step explanation:

A right cylinder has a radius of 2 units and a height of 5 units. a right cylinder has a radius of 2 units and a height of 5 units. what is the volume of the cylinder? round to the nearest tenth.

Answers

The volume of the cylinder given the radius and the height is 562.2 cubic units

Volume of cylinder

Radius, r = 2 unitsHeight, h = 5 units

Volume of a cylinder = πr²h

= 3.14 × 2² × 5

= 3.14 × 4 × 5

= 562.2 cubic units

Therefore, the volume of the cylinder is 562.2 cubic units.

Learn more about cylinder:

https://brainly.com/question/9554871

#SPJ1

Answer:62.8

Step-by-step explanation:

just took the test

what is the value of 2/3 + 1/2 of (1/2 - 1/6) / 2/3 + 1/4​

Answers

Answer:

In fraction form: 77/24


In decimal form: 3.20833


Step-by-step explanation:

That took me a while to solve but that’s the correct answer.


Hope that helps! :)

After four years of higher education, Julia just graduated with a Bachelor's degree in Engineering from USC where the annual cost of tuition was $22,000. She paid for college by earning $11,000 annually through the work study program and receiving an annual scholarship. She covered the remainder of the costs by taking out $12,000 in student loans. If she didn't fund her education with savings or grant money, what was the amount of Julia's annual academic scholarship?

Answers

Answer:

$32,000

Step-by-step explanation:

overall cost for 4 years was $88,000. She made $44,000 after 4 years. After all 4 years she had to take out $12,000 to pay. 88,000-44,000=44,000 44,000-12,000=32,000

Answer:

$8,000

Step-by-step explanation:

Tuition per year: $22,000

Work Study Earnings per year: $11,000

Student Loans per year: $12,000 / 4 = $3,000

Annual Academic Scholarship per year:  $x

Per Year Calculations

$22,000 = $11,000 + $3,000 + $x

$x = $22,000 - $11,000 - $3,000

$x = $8,000

Wen is factoring the polynomial, which has four terms. 6x3 – 12x2 7x – 14 6x2 (x – 2) 7(x – 2) which is the completely factored form of his polynomial?

Answers

Completely factored form of Wen's polynomial is (6x² + 7) (x-2).

What is a polynomial?

An algebraic expression called a polynomial includes coefficients and variables. Indeterminates are another name for variables. For a polynomial expression, we can do mathematical operations like addition, subtraction, multiplication, and positive integer exponents, but division by variable is not possible. Although a polynomial can have multiple number of terms, it can't be infinite.

Factorizing the polynomial

Complete factorization of a polynomial results in products-of-sums

Given polynomial is,

6x³ - 12x² + 7x - 14

This polynomial can be factorized as follows,

6x² (x - 2) + 7(x - 2)

Now, we can factor out the common term (x-2) form each term on either side of the plus operator. thus, we get the following factors,

(6x² + 7) (x-2)

Learn more about polynomial here:

https://brainly.com/question/11536910

#SPJ4

Answer:

Answer  is A   :)

Step-by-step explanation:

use coordinate notation to write the rule that maps each preimage to its image. The identify the transformation and confirm that it preserves length and angle measure. Number 5

Answers

The rigid transformations used for each figure:

Figure 5 - Reflection around x and y axes: (x, y) → (- x, - y)Figure 6 - Horizontal and vertical translations: (x, y) → (x + 1, y - 2)

What transformation rules do create the resulting images?

In this question we must determine what kind of rigid transformations generates each image. Rigid transformations are transformations applied on geometric loci such that Euclidean distance is conserved. Now we proceed to determine the transformation rule for each case:

Figure 5 - Reflection around the x-axis followed by reflection around the y-axis.

(x, y) → (- x, - y)

Figure 6 - Translation one unit in the +x direction and two units in the -y direction.

(x, y) → (x + 1, y - 2)

To learn more on transformation rules: https://brainly.com/question/9201867

#SPJ1

Functions and Transformations

Answers

The new translated function will be more towards the origin , as the value of length is decreased , Option C is the right answer.

What is a Function ?

A function is a mathematical statement used to relate a dependent and an independent variable.

It is given that

Area of a Rectangle is 10 sq. unit

Width of the Rectangle is x unit

Length is given by  

l(x) = 10 / x

When the length of the Rectangle is increased by 1 ,

The new function will be

l(x) = 10 /(x+1)

The new translated function will be more towards the origin , as the value of length is decreased ,

This is represented by Graph 3 ,

This can be proved by keeping the value of x

let x = 2

y = 10 /3 = 3.333

This is only in the graph 3 , Therefore Option C is the right answer.

To know more about Function

https://brainly.com/question/12431044

#SPJ1

Other Questions
Simplify (38)-2(1338)3(13)4. 4x-3/5 - 2x-3/2=-2 Solve for x What conclusion can be drawn about the relationship of joseph listers and louis pasteurs work?. You have $1,300 in savings for retirement. If your investments earn 12% annually, how much will you have in your retirement account in 11 years? In a linear production function, inputs are Multiple choice question. normal goods. perfect substitutes. inferior goods. perfect complements. What would be a best practice when managing the merchandise at a store? Carson wrote the following sentences in his research essay for biology, using social English. Rewrite the sentence so that it is in academic English.I cant even begin to tell you how totally amazing great white sharks are. But, hey, you might already know. According to the center for disease control and prevention how many people die each year because of alcohol?. If three times a number added to 2 is divided by the number plus 4 the result is eight thirds. Find the number In Thailand, it is required that any milk product sold in the country by a foreign company must use the milk that is at least 50 percent produced by Thai dairy farmers. What economic risk is faced by the international producers of milk products in this situation? tax controls export restrictions exchange controls price controls local-content laws Which of the following was true before the Social Security Act of 1935? PLEASE HELP ASAP I WILL GIVE BRAINLIEST!!!!!!!!8:54 am9:12 am9:24 am10:24 am11:18 amLight A flashes every 12 minutes, and Light B flashes every 18 minutes. The two lights flash at the same time at 8:00 am. At how many of the times listed above will they again both flash at the same time? Write a paragraph describing the business venture and what kind of algebra or other calculations and formulas might help someone in that endeavor. Also include ways in which the business might operate differently with those tools than without them. Write the statement as an equation." Three is subtracted from the reciprocal of a number. Let x be equal to the number . 7/8 divided by 9/10[tex]7/8 divided by 9/10[/tex] Somebody help me with this question please. Ill appreciate it thank you what are all of the mole ratios in acetic acid Can you help me find the missing number I have an exam tomorrow and I really need to know the answer (2/3)^ =16/81Find the answer for ^ examine similarities between social movements. Be sure to provide examples. A person uses about 315 calories to jog 3 miles. How many calories will be used in a 10 mile jog?