Question: Pulse rates. Figure 9 shows a histogram for the pulse rates of 98 students. The mean pulse rate is 71.2 beats per minute. Is this

Pulse rates. Figure 9 shows a histogram for the pulse rates of 98 students. The mean pulse rate is 71.2 beats per minute. Is this distribution close to normal? Should this variable have a normal distribution? Why or why not?

20 Frequency 20 40 60 0 -20 0 20 40 60 80

20 Frequency 20 40 60 0 -20 0 20 40 60 80 100 120 Heart rate (beats per minute)

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