Question: Normal temperatures, part II. Consider again the statistics about human body temperature in Exercise 13. a) Would a 90% confidence interval be wider or narrower

Normal temperatures, part II. Consider again the statistics about human body temperature in Exercise 13.

a) Would a 90% confidence interval be wider or narrower than the 98% confidence interval you calculated before? Explain. (You should not need to compute the new interval.)

b) What are the advantages and disadvantages of the 98% confidence interval?

c) If we conduct further research, this time using a sample of 500 adults, how would you expect the 98%

confidence interval to change? Explain.

d) How large a sample would you need to estimate the mean body temperature to within 0.1 degrees with 98% confidence?

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