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DiKsa [7]
2 years ago
11

A survey is targeted at 12-year-old children. Which questions are appropriate for the population?

Mathematics
1 answer:
Rom4ik [11]2 years ago
5 0

Answer:

What do you know how to do that you can teach to others?

If you could be a sound, what would it be?

What is the funniest thing that ever happened to you?

What do you think your life will be like in the future?

What is the most wonderful thing that ever happened to you?

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Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using federal tax dollars to fund
ser-zykov [4K]

<u>Testing the hypothesis</u>, it is found that since the <u>p-value of the test is 0.0042 < 0.01</u>, it can be concluded that the proportion of subjects who respond in favor is different of 0.5.

At the null hypothesis, it is tested if the <u>proportion is of 0.5</u>, that is:

H_0: p = 0.5

At the alternative hypothesis, it is tested if the <u>proportion is different of 0.5</u>, that is:

H_1: p \neq 0.5

The test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1 - p)}{n}}}

In which:

  • \overline{p} is the sample proportion.
  • p is the value tested at the null hypothesis.
  • n is the sample size.

In this problem, the parameters are given by:

p = 0.5, n = 483 + 398 = 881, \overline{p} = \frac{483}{881} = 0.5482

The value of the test statistic is:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1 - p)}{n}}}

z = \frac{0.5482 - 0.5}{\sqrt{\frac{0.5(0.5)}{881}}}

z = 2.86

Since we have a <u>two-tailed test</u>(test if the proportion is different of a value), the p-value of the test is P(|z| > 2.86), which is 2 multiplied by the p-value of z = -2.86.

Looking at the z-table, z = -2.86 has a p-value of 0.0021.

2(0.0021) = 0.0042

Since the <u>p-value of the test is 0.0042 < 0.01</u>, it can be concluded that the proportion of subjects who respond in favor is different of 0.5.

A similar problem is given at brainly.com/question/24330815

3 0
2 years ago
Can someone please answer this question
aniked [119]
Option "D" would be your answer.

- KJ, JL, LK
7 0
3 years ago
Read 2 more answers
The side of a square is 3 and 5/2 inches
Murrr4er [49]
Perimeter=22 inches
Area=121/4 inches
7 0
3 years ago
Please answer correctly !!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!
Oksanka [162]

Answer:

EF is parallel to HG or EH is parallel to FG. EF to HG is correct I think.

Step-by-step explanation:

Look at the markings on the lines.

7 0
2 years ago
a painter charges $20 for every hour that he paints. let h represent the number of hours he paints and e represent his earnings.
Sedbober [7]
One answer could be h times 20 equals e
5 0
3 years ago
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