# Question

A study by researchers at the University of Maryland addressed the question of whether the mean body temperature of humans is 98.6◦F. The results of the study by P. Mackowiak et al. appeared in the article "A Critical Appraisal of 98.6◦F, the Upper Limit of the Normal Body Temperature, and Other Legacies of Carl Reinhold August Wunderlich" (Journal of the American Medical Association, Vol. 268, pp. 1578-1580).

Among other data, the researchers obtained the body temperatures of 93 healthy humans, as provided on the WeissStats CD. Use the technology of your choice to do the following.

a. Obtain a normal probability plot, boxplot, histogram, and stem-and-leaf diagram of the data.

b. Based on your results from part (a), can you reasonably apply the z-interval procedure to the data? Explain your reasoning.

c. Find and interpret a 99% confidence interval for the mean body temperature of all healthy humans. Assume that σ = 0.63◦F. Does the result surprise you? Why?

Among other data, the researchers obtained the body temperatures of 93 healthy humans, as provided on the WeissStats CD. Use the technology of your choice to do the following.

a. Obtain a normal probability plot, boxplot, histogram, and stem-and-leaf diagram of the data.

b. Based on your results from part (a), can you reasonably apply the z-interval procedure to the data? Explain your reasoning.

c. Find and interpret a 99% confidence interval for the mean body temperature of all healthy humans. Assume that σ = 0.63◦F. Does the result surprise you? Why?

## Answer to relevant Questions

R. Reifen et al. studied various nutritional measures of Ethiopian school children and published their findings in the paper "Ethiopian-Born and Native Israeli School Children Have Different Growth Patterns" (Nutrition, Vol. ...Refer to Exercise 8.33. a. Determine and interpret a 99% lower confidence bound for the mean cadmium level of all Boletus pinicola mushrooms. b. Compare your one-sided confidence interval in part (a) to the (two-sided) ...Answer true or false to each statement concerning a confidence interval for a population mean. Give reasons for your answers. a. The length of a confidence interval can be determined if you know only the margin of error. b. ...In Exercise 8.36, you found a 99% confidence interval of $2.03 million to $2.51 million for the mean gross earnings of all Rolling Stones concerts. a. Determine the margin of error, E. b. Explain the meaning of E in this ...An issue of Scientific American revealed that batting averages, x, of major-league baseball players are normally distributed and have a mean of 0.270 and a standard deviation of 0.031. For samples of 20 batting averages, ...Post your question

0