A researcher wanted to see whether there is a significant difference in resting pulse rates for men and women. The data she collected are displayed in the box-plots and summarized in the next column.

a) What do the boxplots suggest about differences between male and female pulse rates?
b) Is it appropriate to analyze these data using the methods of inference discussed in this chapter? Explain.
c) Create a 90% confidence interval for the difference in mean pulse rates. (From technology, df = 40.2.)
d) Does the confidence interval confirm your answer to part a? Explain.

Sex Male Female 24 Count 28 Mean 72.75 72.625 Median 73 StdDev 5.37225 7.69987 Range 20 IQR 73 29 12.5 82.5 75.0 67.5 60.0F Male Female Sex