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You would like to conduct a survey to estimate the average number of hours of sleep...

You would like to conduct a survey to estimate the average number of hours of sleep UWEC students get per night. You would like a 95% confidence interval whose width is no more than 0.5 hours.

a. What is the margin of error, ??

b. What is ?, the level of significance that corresponds to the confidence level?

c. What is the multiplier (??/2)?

e. Find the smallest sample size that would be reasonable to achieve your goal of a 95% confidence interval whose width is no more than 0.5 hours?

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