Advanced Placement (AP), 12.05.2021 09:10, webbjalia04

Ms. Garcia wants to estimate how much time students spend on homework, on average, during a typical week. She wants to estimate at the 90% confidence level with a margin of error of at most 30 minutes. A pilot study indicated that the standard deviation of time spent on homework per week is about 154 minutes. What’s the minimum number of students you would need to survey?

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Ms. Garcia wants to estimate how much time students spend on homework, on average, during a typical...