Author Question: The director of a hospital wishes to estimate the mean number of people who are admitted to the ... (Read 71 times)

lidoalex · **on:** Feb 14, 2020

Question 1

Sales of a new line of athletic footwear are crucial to the success of a company. The company wishes to estimate the average weekly sales of the new footwear to within $300 with 90% reliability. The initial sales indicate that the standard deviation of the weekly sales figures is approximately $1100. How many weeks of data must be sampled for the company to get the information it desires?
◦ 7 weeks
◦ 23 weeks
◦ 37 weeks
◦ 10,915 weeks

Question 2

The director of a hospital wishes to estimate the mean number of people who are admitted to the emergency room during a

period. The director randomly selects 64 different 24-hour periods and determines the number of admissions for each. For this sample,

and

If the director wishes to estimate the mean number of admissions per

period to within 1 admission with 90% reliability, what is the minimum sample size she should use?
◦ 11
◦ 44
◦ 27
◦ 7

cici · **Reply #1 on:** Feb 14, 2020

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