Recall Exercise 2.4.22 about male body temperatures. You should have found that 98.6°F was not a plausible value for the population mean because it was more than 2 standard deviations of the bootstrap sampling distribution away from the mean. What values are plausible? In other words, what values are within 2 standard deviations from the sample mean, which theoretically should be the mean of the bootstrap sampling distribution.

Data from Exercise 2.4.22

Normal (or average) body temperature of humans is often thought to be 98.6°F. Is that number really the average body temperature for human males or is it something different? To test this, we will use the MaleTemp dataset that consists of 65 body temperatures from healthy male volunteers aged 18 to 40 from the United States who were participating in vaccine trials.