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Author Question: In a poll of 278 voters in a certain city, 65% said that they backed a bill which would limit growth ... (Read 31 times)

Diane

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Question 1

A population proportion is to be estimated. Estimate the minimum sample size needed to achieve  the specified margin of error with a 95% degree of confidence.

A researcher wishes to estimate the proportion of children in a certain neighborhood who are living with only one parent. She wishes to achieve a margin of error of E = 0.021. What is the minimum sample size needed?
◦ 2268
◦ 48
◦ 1134
◦ 4536

Question 2

In a poll of 278  voters in a certain city, 65% said that they backed a bill which would limit growth and development  in their city. The margin of error in the poll was reported as 6 percentage points (with a 95% degree of confidence). Which   statement is correct?
◦ There is not enough information to determine whether the margin of error is consistent with the sample size.
◦ The sample size is too small to achieve the stated margin of error.
◦ The reported margin of error is consistent with the sample size.
◦ For the given sample size, the margin of error should be  smaller than stated.


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Marked as best answer by Diane on Jan 18, 2020

Moriaki

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Diane

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Reply 2 on: Jan 18, 2020
:D TYSM


meganmoser117

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Reply 3 on: Yesterday
Excellent

 

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