Ch 24 Question 1

1. Resting pulse rates for a random sample of 26 smokers had a mean of 80 beats per
minute (bpm) and a standard deviation of 5 bpm. Among 32 randomly chosen nonsmokers,
the mean and standard deviation were 74 and 6 bpm. Both sets of data were roughly
symmetric and had no outliers. Is there evidence of a difference in mean pulse rate between
smokers and non-smokers? How big?