(Solution) - Consider again the statistics about human body temperature in Exercise -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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Consider again the statistics about human body temperature in Exercise 23.
a) Would a 90% confidence interval be wider or narrower than the 98% confidence interval you calculated before? Explain. (Don't 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 might allow you to estimate the mean body temperature to within 0.1 degrees with 98% confidence?
Summary Temperature
Count ???????.. 52
Mean ???????? 98.285
Median ??????? 98.200
MidRange ?????? 98.600
StdDev ??????? 0.6824
Range ???????? 2.800
IntQRange ?????? 1.050