Angela wants to use a one-sample zzz interval to estimate what proportion of employees at her large corporation are satisfied with their benefits. She plans on using a confidence level of 90\%90%90, percent, and she wants her margin of error to be no more than \pm 5\%±5%plus minus, 5, percent.

Answers

Answer 1

Answer:

Step-by-step explanation:

It's 271 on Khan Academy

Answer 2

The sample space size that Angela wants to use for the employees who are satisfied with their benefits is. 271

What is margin of error?

In statistics, the margin of error is the level of inaccuracy in the findings of surveys using random samples. Less reliance on survey or poll results is indicated by higher statistical margins of error.

Given that,

[tex]\^p[/tex] = 0.5

1 - [tex]\^p[/tex]  = 1 - 0.5= 0.5

margin of error = E = 5% = 0.05

At 90% confidence level

= 1 - 0.90 = 0.10

0.10/2 =0.05

Z/2 = 1.645 ( Using z table )

Sample size = n = (Z/2 / E)² x   (1 - [tex]\^p[/tex])²

= (1.645 / 0.05)² * 0.5 x 0.5

=270.6

Sample size = 271

The required sample size is 271.

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Related Questions

Plz help I am bad at this

Answers

your answer is either A or D

Find the value of x. Round to the nearest tenth of a unit. 203 m 22° O A. 82.0 m O B. 218.9 m O C. 502.4 m O D. 541.9 m​

Answers

Answer:  502.4 m

Step-by-step exp

Answer: C or 502.04

Step-by-step explanation: took the practice got 100%

please helpppp!!!will mark brainlyist

Answers

The answer is CB, AC, and AB

What is the area of this composite figure??

Answers

Answer=53

Step-by-step explanation:

Can anyone plz answer this question, i will give brainliest

Answers

Answer:

C.6

Step-by-step explanation:

Remember, a constant term is a term that keeps repeating. Also, it's the only term that doesn't contain a variable. In this equation, 6 is the constant.

Hope I helped!!!

You and your friends are at the local ice cream shop. You get a cone that has a diameter of 12 cm and a height of 12 cm that is full of ice cream, and has a sphere of ice cream on top with the same diameter. What is the total volume of your ice cream cone? Show your work in terms of π.

Answers

Answer:

the answer is 24 centimeters

The guy up top is right this is correct did t oh get it right

Solve the equation for X+15 =X+30

Answers

Answer:

i'm pretty sure there's no solution

Answer:

Step-by-step explanation:

HELPEOEODODOEKEKEL PLEASE

Answers

Answer:

Lily earns $225

y represents the amount that Lily earns

x represents the painting's price

Step-by-step explanation:

divide .072 by 345.00 and round to the nearest tenth

Answers

Answer:

.072 / 345.00 = 0.0002086956

the tenth place is the fist digit to the right of the decimal point

so it would round to 0.0

Step-by-step explanation:

If ε = {whole numbers less than 50 but greater than 20} and X = {perfect squares}, Y = {factors of 12}, Z = {prime numbers}; find the following:
a) X ∪ Y
b) X ∩ Y
c) X ′
d) X′ ∩ Y ∩ Z

Answers

Answer:

A. X∪Y = {25, 36, 49}

B. X∩Y = ∅ i.e empty set

C. X' = {21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48}

D. X′∩Y∩Z = ∅

Step-by-step explanation:

We'll begin by determining the universal set (ε), set X, set Y and set Z.

This can be obtained as follow:

ε = {whole numbers less than 50 but greater than 20}

ε = {21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49}

X = {perfect squares}

X = {25, 36, 49}

Y = {factors of 12}

Y = ∅ i.e empty

Z = {prime numbers}

Z = {23, 29, 31, 37, 41, 43, 47}

A. Determination of X∪Y

X = {25, 36, 49}

Y = ∅

X∪Y =?

X∪Y => combination of elements in set X and Y without repeating any element in both X and Y.

X∪Y = {25, 36, 49}

B. Determination of X∩Y

X = {25, 36, 49}

Y = ∅

X∩Y =?

X∩Y => elements common to both set X and Y

X∩Y = ∅ i.e empty

C. Determination of X′

ε = {21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49}

X = {25, 36, 49}

X' =?

X' => elements in the universal set but not found in set X.

X' = {21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48}

D. Determination of X′∩Y∩Z

X' = {21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48}

Y = ∅

Z = {23, 29, 31, 37, 41, 43, 47}

X′∩Y∩Z =?

X′∩Y∩Z => elements common to set X', Y and Z

X′∩Y∩Z = ∅

2.3
Write the ratio in its simplest form:
Convert
2 m : 8cm: 40mm​

Answers

Answer:

1:20:500

Step-by-step explanation:

2m:8cm:4mm

Convert the three to a single unit, take mm giving 2000:80:4

In its simplest form 500:20:1=1:20:500

!!!!?HELP WILL MARK BRAINLIST ANSWER PLEASE HELP!!!! !!ALSO I ADDED THE PICTURE!!!
The pressure in the Hartford Dam is building because of all the
melted snow from the winter. The lake behind the dam is as high
as it gets all year. The managers have decided to open three
floodgates on the dam. Each one is a different size, and that means
a different amount of water comes out of each one. The table below
shows the gallons per second coming out of each gate.

Answers

Answer:

I believe it's 20 seconds.

(i) Factorise the expression x^3 + 3x - x^2 - 3 completely.

(ii) Hence, express (x^2 – 3)^3 - (2 - x^2)^2 + 3(x^2- 3) in the form (x^4+Ax^2+B)(x^2+ C), where A, B and C are integers.

Answers

Step-by-step explanation:

Answer 1 put all like terms then solve

hope it helps....

a) The value of the equation is A = ( x - 1 ) ( x² + 3 )

b) The value of the equation is B = ( x⁴ - 6x² + 10 ) ( x² - 4 )

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

a)

The equation is A = x³ + 3x - x² - 3  

On simplifying the equation , we get

A = x³ - x² + 3x - 3

A = x² ( x - 1 ) + 3 ( x - 1 )

On factorizing the equation , we get

A = ( x² + 3 ) ( x - 1 )

b)

The equation is B = ( x² - 3 )³ - ( 2 - x² )² + 3 ( x² - 3 )

On simplifying the equation , we get

B =  ( x² - 3 )³ - ( x⁴ - 2x² - 2x² + 4 ) + 3 ( x² - 3 )

On further simplification , we get

B = ( x² - 3 )³ - x⁴ + 4x² - 4 + 3x² - 9

B = ( x² - 3 )³ - x⁴ + 7x² - 13

On factorizing the equation , we get

B = ( x - 2 ) ( x⁵ + 2x⁴ - 6x³ - 12x² + 10x + 20 )

B = ( x - 2 ) ( x + 2 ) ( x⁴ - 6x² + 10 )

And , on further simplification , we get

B = ( x² - 4 ) ( x⁴ - 6x² + 10 )

Hence , the equation is B = ( x² - 4 ) ( x⁴ - 6x² + 10 )

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The average area of a bedroom in a home is 219 square feet with a standard deviation of 32.5 square feet. What is the largest a bedroom can be and be among the smallest 25% of bedrooms in a home?

Answers

Answer:

197.095

Step-by-step explanation:

Mean, m = 219 ft²

Standard deviation, s = 32.5 ft²

For a bedroom to be among the smallest 25%

P(x < Z) = 0.25

From Z probability calculator, this corresponds to a Zscore of - 0.674

Recall :

Zscore = (x - m) / s

x = bedroom size

-0.674 = (x - 219) / 32.5

-0.674 * 32.5 = x - 219

-21.905 = x - 219

x = - 21.905 + 219

x = 197.095

Hence, the largest a bedroom can be and still be among the smallest 25% is 197.095

One morning at a zoo, there were 165 adults and children who paid to enter. The zoo collected $1,440 from admission fees. The price of admission is $10 for an adult and $7 for a child. How many children were admitted to the zoo?

Answers

Answer:

number of children admitted to the zoo=70

let adult =a

let children=c

a+c=165........equation 1

10a+7c=1440.......equation 2

a=165-c........equation 3

substitute equation 3 in equation 2

10a+7c=1440

10(165-c)+7c=1440

1650-10c+7c=1440

-10c+7c=-210

-3c=-210

c=70

Therefore children =70

Complete the set of data with one value so that the mean of the data is 24. 26, 35, 10, 18, 15, 37, 25, 20, 15,

Answers

Answer:

39

Step-by-step explanation:

So there are 9 values. (1 to be added). First we add them all up. And we need to add another value. So the mean is all of the values added up, divided by the number of numbers. If we add another value, then there'll be 10 values. 24x10 is, of course, 240. If you add all of the given values, you get 201. And we can easily create the equation, x+201=240, and x, or the missing value, is obviously 39.

I will give BRAINLIEST

Answers

Answer:

D.

Step-by-step explanation:

the factors are (x-1)(x+4)(x-4)

Find the perimeter P of the figure shown. Simplify your answer

Answers

Answer:

C) 26x + 3

Step-by-step explanation:

Perimeter = 7x + 2 + 5x - 3 + 9x + 7 + 5x - 3

combine like terms:

Perimeter = 26x + 3

find the value of x plz help

Answers

Answer:

29 degrees

Step-by-step explanation:

Both angles are the same.

29 Degrees if it is a isosceles

Points that you can have! :)

Answers

Answer:

Thank youuu !

Step-by-step explanation:

Answer:

Thank you

Step-by-step explanation:

Can someone plsss help mee :(

Answers

Answer:I think it is 89

Step-by-step explanation:

eu preciso de ajuda pfvr:(

Answers

I’m not a true percent sure but I think it’s C

15 of 20 answer
You and your friend fill 20 bags with leaves. The ratio of bags you filled to bags your friend filled is 2 to 3. Use the tape diagram to find how many bags
you filled
You
Your friend
You filled
bags

Answers

Answer:

8 bags

Step-by-step explanation:

You divided them by 20 which gives you 4. So you take the 3 and multiply by 4 which is 12 bags. And then you do the same for your bags which makes you do 2 times 4 which gives you 8. You take 20 - 12 and that leaves you with 8.

A right circular cylinder has a volume of 1296 cubic inches if the radius of the cylinder is divided by 12 what be the volume in cubic inches of the smaller cylinder

Answers

Answer:

Step-by-step explanation:

A right circular cylinder has a volume of 1296 cubic inches

The volume of a cylinder = πr²h

Step 1

We find the radius

1296 inches = πr²h

r² = 1296/π ×>h

if the radius of the cylinder is divided by 12 what be the volume in cubic inches of the smaller cylinder

What is the sum of the two fractions below in simplest form.
3 3/8 and 2 1/4

Answers

Answer:

5 5/8

Step-by-step explanation:

This is in the simplest form

Find the area of a circle with diameter 14 mm. Use the value 3.14 for π, and do not round your answer. Be sure to include the correct unit in your answer.

Answers

Answer:

153.86 mm²

Step-by-step explanation:

Radius of circle = diameter/2 = 14/2 = 7mm

Area of circle = πr² = (3.14)(7mm)²

= 3.14 x 49 mm²

= 153.86 mm²

What is the volume of a cylinder,in cubic feet,with a high of 5 feet in a base diameter of 10 feet?Round to the nearest tenth place

Answers

Answer:

390.7ft³ is the answer

hey cutie i need help :(
select all that apply !

Of the students who prefer science, 70% are female.
The number of students who prefer science is 130
Of the students who prefer math, 21 are male.
Of the students who prefer math, 17% are male.
Of the students who prefer science, 54% are female.
Of the students who prefer math, 14% are male.

Answers

Answer:

wrong right right wrong right wrong

Step-by-step explanation:

70/ 130= 53.8%

4th row 3rd one to the right

2nd row, 2nd one to the right.

21/156 = 13.4%

70/130 = 53.8% round to get 54%

21/156 = 13.4%

so 2nd 3rd 5th apply

please help me please

Answers

Answer:

the answer is 70

Step-by-step explanation:

Because I'm in collage I know this stuff just trust me here

Chapter 7 need help ASAP

Answers

Answer:

The answer should be that Q is (-3,-2)

Step-by-step explanation:

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