Question 3 (25 points)
A church group interested in promoting volunteerism in a community chooses an SRS of 200 community addresses and
sends members to visit
these addresses during weekday working hours to inquire about the residents attitudes toward volunteer work. Sixty percent of all
respondents say that they would be willing
to donate at least an hour a week to some volunteer organization. Bias is present in this sample
design. Identify the type of bias involved and state whether you think the
sample percent obtained is higher or lower than the true population
percent.​

Answers

Answer 1

Answer:

if the polling were done during working hours, those who work outside the home would not be included-undercoverage of the groupe. the 60% is probably higher than the true population proportion. face-to-face visits might make those at home likely to say they would volunteer.  

Step-by-step explanation:


Related Questions

Radianes a grados 5 pi sobre 3

Answers

Answer:

5pi/3x180grados/piradianes

900/3=300 grados

Step-by-step explanation:

There are 30 students in a class of 18 of them own at least one pet what fraction of the class own pets? Give your answer in its simplest form

Answers

Answer:

18/30 simplified is 3/5

Step-by-step explanation:

Write a numerical expression for the verbal phrase. The quotient of 81 and 3.
A. 3÷81
B. 27
C. 81÷3
D.81×3​

Answers

Answer:

C.  81÷3

Step-by-step explanation:

We want to write a numerical expression for the phrase: "the quotient of 81 and 3"

Quotient indicates division, so we must divide 81 by 3.

81÷3

This can be further simplified, but the questions asks for a numerical expression. This is defined as an expression with numbers and at least one operation. So, B is correct, because 81 divided by 3 is 27, but it is not a numerical expression.

Therefore, the best answer choice is C.  81÷3

PLS ANSWER FAST!! CORRECT ANSWER GETS BRAINLIEST!!!!

Answers

The price per pound of cinnamon is $5.25/0.75 lb is TRUE

The 0.75 lbs of cinnamon costs $5.25 is TRUE

Cinnamon costs $7 per one pound cannot be determined

5.25 lbs of cinnamon costs .75 is NOT TRUE

The weight per bag of cinnamon is 5.25 is NOT TRUE or CANNOT BE DETERMINED

hope this helped :)

Simplify using order of operations. Show all of your work and do ONE operation at a time to receive all possible points. 90 ÷ [ 10 + ( 3 2 − 4 ) ]

Answers

You are welcome
I’m from Vietnam

An expression is defined as a set of numbers, variables, and mathematical operations. The value of the expression when simplified is equal to 2.3684.

What is an Expression?

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

As per the PEMDAS, we will first solve the parenthesis. Since the round parenthesis is solved first, therefore, we can write,

90 ÷ [10 + ( 32 − 4 )]

= 90 ÷ [10 + (28)]

= 90 ÷ [10 + 28]

Solving the next parenthesis, therefore, the square brackets,

= 90 ÷ [10 + 28]

=  90 ÷ 38

At last, we will solve the division, therefore, we can write,

= 90 ÷ 38

= 2.3684

Hence, the value of the expression when simplified is equal to 2.3684.

Learn more about Expression here:

https://brainly.com/question/13947055

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The sale price of a new refrigerator is $648 and sales tax is figured at 0.10 times the price. What is the total amount paid for the refrigerator?

Answers

Answer:

$712.80

Step-by-step explanation:

648×0.10=64.8

648+64.8=712.8

The total amount paid for the refrigerator is $712.8.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Sale price = $648

Sales tax = 0.10 times the price

The total amount paid.

= 648 + 0.10 x 648

= 648 + 64.8

= 712.8

Thus,

The total amount paid is $712.8.

Learn more about expressions here:

https://brainly.com/question/3118662

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A bag contains 26 tiles, each with a different letter of the alphabet written on it. You choose 3 tiles from the bag without looking. What is the probability that you chose tiles with the letters A,B,C?


Ps: don’t text me only if u know the answer that’s it

Answers

Answer:

for each letter 1 /26 is the probability

Step-by-step explanation:

probability = no. of events / no. of outcome

probability for tile A

                  = no. of events / no. of outcome

                  = 1 / 26

probability for tile B

                  = no. of events / no. of outcome

                  = 1 / 26

probability for tile C

                  = no. of events / no. of outcome

                  = 1 / 26

Hope it helpsplease mark brainliest

Why is the answer for letter b 9?

Answers

Answer:

Take a look at the 'proof' below

Step-by-step explanation:

The graph of the function g(x) is similar to that of the function f(t). The local minimum, local maximum, absolute minimum, maximum etc... of 'x' is always the closest x-intercept of the graph of f(t).

Let's check if this statement is right. The two local minimum(s) of the function f(t) occurs at x = 2, and x = 6. The two local maximum(s) occur at 1/4 and 4. As you can see the maximum / minimum of the function g(x) is always an x-intercept, x = 3, x = 7.

For part (b) the absolute maximum value of the function f(t), is 8. The closest x-intercept is 9, which is our solution.

Step-by-step explanation:

From x=0 to x=1, the function is above the x-axis, so the area is positive.

From x=1 to x=5, the area above the x-axis is greater than the area below the x-axis, so the net area is positive.

From x=5 to x=9, the area above the x-axis is greater than the area below the x-axis, so the net area is positive.

Since the area increases in each interval, the area is a maximum at x=9.

Which fractions are equivalent to 6/8 ? Check all that apply.
1/4
2/8
4/16
3/4
12/16​

Answers

Answer:

3/4

Step-by-step explanation:

you got to find the half of the number

what is 8.546 rounded to the nearest tens?

Answers

Answer:

10

Step-by-step explanation:

In this problem we need to round off 8.546 to the nearest tens. 8 is in ones place, 5 is in tenths place, 4 is in hundredths place and 6 is in thousandth place.

8 falls between 5 and 10 on the number line. It is less than 5 and more than 10. When it is rounded off to nearest tens it can be given by 10.

Is the answer (-1,1)???

Answers

Answer:

yes

Step-by-step explanation:

Answer:

(1 , -1)

Step-by-step explanation:

7( 1 ) - 3( -1 ) = 10

7 - - 3 = 10

7 + 3 = 10

10 = 10

true

7 - 5 + 14 / 2 + 6. workings pls​

Answers

Answer:

15

Step-by-step explanation:

PEMDAS

7-5+14/2+6

14/2=7

7-5=2

6=6

7+2+6=15

[tex]\text {Hello! To answer this question you must...}[/tex]

[tex]\text {Subtract:}[/tex]

[tex]\text {7-5=2}[/tex]

[tex]\text {Divide:}[/tex]

[tex]\text {14/2=7}[/tex]

[tex]\text { Your new equation should be 2+7+6}[/tex]

[tex]\text {Now for the final step you add}[/tex]

[tex]\text {2+7+6=}[/tex]

[tex]\fbox {15}[/tex]

[tex]\text {Bext of Luck!}[/tex]

[tex]\text {-LimitedX}[/tex]

Kaleb can skateboard 75 feet in 25 seconds. How far can he skateboard in 3.25 minutes?

Answers

Answer:

585 Feet

Step-by-step explanation:

First, you have to consider how much seconds in a minute. 60.

Then, multiply 75 feet to make it match to 60 seconds. So 60/25. You get 2.4. You multiply 2.4 by 75 to get 180 feet per minute.

Finally, you multiply 180 by 3.25, as it is 3.25 minutes.

he can go 3 feet per a second, so there are 195 seconds in 3.25 minutes so you would do 3 x 195 giving you an answer of 585 feet in 3.25 minutes

what is the difference between 585 and -8

Answers

Answer:

593

Step-by-step explanation:

when you are subtracting a negative it is the same as adding

Suppose pieces of chocolate pie served at a restaurant average 350 calories with a standard deviation of 20 calories. Calories have a Normal distribution due to inexact cutting of the pies. The shaded area represents the proportion of pieces of pie that have more than:__________

Answers

Answer:

Step-by-step explanation:

Suppose pieces of chocolate pie served at a restaurant average 350 calories with a standard deviation of 20 calories. Calories have a Normal distribution due to inexact cutting of the pies. Which graph represents the proportion of pieces of pie that have more than 375 calories.

Answer: The z score is used to determine how many standard deviations that the raw score is above or below the mean. If the z score is positive then the raw score is above the mean and for a negative z score means the  raw score is below the mean. The z score is given as:

[tex]z=\frac{x-\mu}{\sigma}[/tex]

Given that: μ = 350 calories, σ = 20 calories, x > 375

[tex]z=\frac{x-\mu}{\sigma}\\\\z=\frac{375-350}{20}=1.25[/tex]

From the graph, The shaded area represents the proportion of pieces of pie that have more than 375 calories

From the normal distribution table, P(x > 375) = P(z > 1.25) = 1 - P(z < 1.25)

= 1 - 0.8944 = 0.1056 = 10.56%

What does absolute value tell you

Answers

Answer:

the magnitude of a real number without regard to its sign.

Step-by-step explanation:

A trianglar carpet is laid in a square room of side 12m, if the base of the carpet is 10m and the height is 8m, calculate the area of the floor uncoverd​

Answers

Answer :

Area of square room :

[tex]:\implies\sf\:A_s=(side)^2[/tex]

[tex]:\implies\sf\:A_s=(12)^2[/tex]

[tex]:\implies\bf\:A_s=144\:m^2[/tex]

Area of triangular carpet :

[tex]:\implies\sf\:A_t=\dfrac{1}{2}\times base\times perpendicular[/tex]

[tex]:\implies\sf\:A_t=\dfrac{1}{2}\times 10\times 8[/tex]

[tex]\:\implies\sf\:A_t=\dfrac{1}{2}\times 80[/tex]

[tex]:\implies\bf\:A_t=40\:m^2[/tex]

Uncovered area of room :

[tex]:\implies\sf\:\Delta A=A_s-A_t[/tex]

[tex]:\implies\sf\:\Delta A=144-40[/tex]

[tex]:\implies\:\boxed{\bf{\blue{\Delta A=104\:m^2}}}[/tex]

Evaluate the polynomial when a.x=0 and b.x=-1
x2 – 3x - 7

Answers

Answer:

a) -7 & b) -6

Step-by-step explanation:

Here,

a) x = 0

Solution ↦

[tex]x2 - 3x - 7 \\ = 0 \times 2 - 3 \times 0 - 7 \\ = - 7[/tex]

b) x = -1

Solution ↦

[tex]x2 - 3x - 7 \\ = - 1 \times 2 - 3 \times ( - 1) - 7 \\ = - 2 + 3 - 7 \\ = - 9 + 3 \\ = - 6[/tex]

. What is the median of this set of values? 6, 8, 10, 8, 4, 2, 12 4 6 7 8

Answers

Answer:

7

Step-by-step explanation:

Just put the numbers in order the find the number in the middle in the case that there are to numbers add the together then divide by 2

A circle has a radius of 3.93 inches. Using the correct number of significant digits, find the circumference and the area of the circle.

The circumference is ____ in.
The area is ____ in.

Answers

Answer:

The circumference is 24.69 in.

The area is 48.52 in.

Step-by-step explanation:

Circumference rule => Cf=2πr

So, Cf=2π(3.93)=24.69in

Area rule => A=πr^2

So, A=π(3.93)^2=48.52in

Justin’s lemonade stands didn't do well this year. He.spent $14.28 on supplies (lemons and paper cups). He paid his friend $13 to help him build his lemonade stand. He sold forty-one cents each. What was his profit?

Answers

Answer:

16 + (–7) + 22 + (–12)

Hope this helped!!!

write a fraction and a percent for the shaded portion of each one.

Answers

i dunno if im correct, but for A. I’d say 1/4 for B. I’d say 1 1/2 for C. 2/3

Answer:

Fractions:

a. 1/4

b. 1 and a half

c. 2/3

Percentages:

a. 25%

b. 50% unsure abt this one

c. 66.67%

Step-by-step explanation:

What is the midpoint of AB?
point F
point G
point H
point I

Answers

Answer:

g

Step-by-step explanation:

Answer:

point g is the answer

Step-by-step explanation:


Maisie has saved up $50 to buy concert tickets, but the tickets cost $125. She is able to earn $15 per day by walking her neighbor’s dogs. How many days will Maisie have to walk the dogs to earn enough money to buy the tickets? Let d = the number of days worked.

Answers

Subtract 50 from 125

75

Divide by 15 (number of dollars per day)

5

If Maisie walks her neighbors dogs for 5 days, she will save up to a total of 125

Hope this helps :)

Answer:

✔ 50 + 15d = 125

What equivalent equation can you write after combining like terms?

✔ 15d = 75

How many days will Maisie have to walk the dogs?

✔ 5 days

Step-by-step explanation:

took. test.

Can you help me plz?

Answers

Answer:

3.048 meters

Hope this helps

A faucet leaks water at a constant rate of 58 quart every 15 minutes.How many quarts does the faucet leak per hour?

Answers

Answer:

232 quarts

Step-by-step explanation:

58 quarts per 15 minutes, so 15 minutes x4 is an hour, so you would also do 58x4 which gets your answer of 232 quarts

Hope this helped :)

3. Andrew wants to buy exercise equipment that costs $140 and the
tax is 5.75%. What is the sales tax?

Answers

Answer:

23

Step-by-step explanation:

just trust me

find the missing side that's indicated. Round your answers to the nearest tenth.

Answers

Answer:

1) 16.8ft

2) 32.2ft

3) 50.9cm

4) 14.4m

(all answers rounded off to the nearest tenth)

Step-by-step explanation:

Please see attached pictures for the full solution.

Omar's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs $4.10 Omar per pound, and type B coffee costs $5.30 per pound. This month, Omar made 141 pounds of the blend, for a total cost of $640.50. How many pounds of type A coffee did he use?

Answers

Hey there! I'm happy to help!

Let's use the variables A and B to represent the number of pounds used of types A and B.

4.10A+5.30B=640.50

A+B=141

Let's rearrange the bottom equation to solve for B.

A+B=141

Subtract A from both sides.

B=141-A

We can put this value of B into the first equation to solve for the number of pounds of type A Omar used.

4.10A+5.30(141-A)=640.5

We use distributive property to undo parentheses.

4.10A+747.3-5.3A=640.5

We combine like terms.

-1.2A+747.3=640.5

Subtract 747.3 from both sides.

-1.2A=-106.8

Divide both sides by -1.2

A=89

Omar used 89 pounds of type A coffee in this month's blend.

Have a wonderful day! :D

An artist is making a scale model of a statue. On the model 2 inches represent 1 foot on the actual state witch graph best represents this relationship

Answers

Answer:

C

Step-by-step explanation:

i have the same question i found it on quizzes

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