A random sample of adult women ages 25 - 35 had their heart rate recorded after 5 minutes of moderate aerobic exercise.
Sample data hear rate 90, 90, 92, 88, 89, 89, 91, 93, 90, 90, 91, 91, 92, 90, 91, 90, 90, 91, 89
Construct a stem-and-leaf plot. Do the data approximate a normal distribution? Explain in 1 - 2 complete sentences.