(08.01 MC)A researcher posts a newspaper advertisement offering $10 in exchange for participation in a short study. The researcher accepts the first 10 people who respond to the advertisement. Which of
following statements true about the sample?
It is not a valid sample because it is only a short study,
It is a valid sample because money is offered to participants.
It is a valid sample because the first 10 people were selected to participate.
It is not a valid sample because it is not a random sample of the population

Answers

Answer 1

Answer:

The correct answer is the last on that’s states: it is not a valid sample because it is not a random sample of the population.

Step-by-step explanation:

When a researcher wants to know about the same thing, he/she has to take a sample from the population.

Example, consider a researcher wants to know how many hours the students study at home in a week, so the researcher has to take the sample from the student population.

Here, he/she gives the advertisement and offers $10 for 10 people. Therefore for anyone can come they might not required for a particular study.

Therefore, the answer is the last one.

Answer 2

Answer:

Answer:

Step-by-step explanation:

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A 5-foot piece of linen costs $29.40. what is the price per inch?

Answers

the price per inch is $5.88

Answer is .49 cents

Explain:
Do 29.40 divided by 5
And get 5.88
After that you divide that by 12 because there are 12 inches in a foot.

On your birthday, you deposit $540.00 in a account that pays 6% interest, compounded annually. How much is in the account 3 years later?

Answers

6% of 540 is 32.4
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A seed company planted a floral mosaic of a national flag. The perimeter of the flag is 500 feet. Determine the flag’s length and width if the length is 70 feet greater than the width.

Answers

Answer:

Width = 90 feet and length = 160 feet

Step-by-step explanation:

Let w = width

Let w + 70 = length

The perimeter would be 2(w) + 2(w + 70) = 2w+ 2w + 140 which must equal 500 feet.

Add the like terms:

4w+140=500; subtract 140 from both sides; 4w = 360; divide both sides by 4 and you get w= 90. If w = 90, then length = 90 + 70 = 160 feet

Let the width be x

length = 70+x

Perimeter =2(l+b)

500=2(70+x+x)

70+2x=250

2x=180

x=90

Width = 90 feet

Length = 70+90=160

HOPE THIS WILL HELP U

Find the greatest common factor of 25 and 33 .

Answers

factor and find commmon ones
25=1*5*5
33=1*3*11

GCF=1
(I am noticing that GCF=1 for many of your questions)

Line A, B or C
Pls help

Answers

Answer:

linne b

Step-by-step explanation:

you can see that on the x axis at point 3 you can go 4 up until the line B is met

The answer is line B. The slope is 4/3, which means 4 up and 3 across. The concept is rise/run.

-2/3 = 2r - -2/3 please answer

Answers

answer is -1 add the like terms then divide with the number that have the variable in both sides you will get the answer

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