1) Help Stanley out by writing a sentence to explain what the confidence interva
ID: 3242541 • Letter: 1
Question
1) Help Stanley out by writing a sentence to explain what the confidence interval he has calculated means in the context of the problem he is working on.
2) Stanley feels like his confidence interval is very wide. He wonders if it is possible to make the confidence interval more narrow. What would he have to do in order to calculate a more narrow confidence interval? (There are two ways to do this.)
3) Which of the two ways you suggested in #2 would be the better way for Stanley to narrow the confidence interval? Explain.
Explanation / Answer
answer 1
We are 95% confident that the population proportion is
between 25.42%-11.11% and 25.42%+11.11%
answer 2
Increasing "n" (the sample size) will shink the ME and therefore shink the width
Decrease ME by decreasing z by increasing the level of confidence
answer 3
Increase the sample size
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