A data set includes 107 body temperatures of healthy adult humans having a mean of 98.7 degrees Fahrenheit and a standard deviation of 0.72 degrees Fahrenheit. Construct a 99% confidence interval estimate of the mean body temperature of all healthy humans. What does the sample suggest about the use of 98.6 degrees Fahrenheit as the mean body temperature?
Added by Anthony S.
Step 1
The confidence level is 99.99%, which means the alpha level is 0.0001. Since the sample size is large (n > 30), we can use the z-distribution. The critical value for a two-tailed test at this level of confidence is ±3.891. Show more…
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