Pulse Rates What’s a normal pulse rate? That depends on a variety of factors. Pulse rates between 60 and 100 beats per minute are considered normal for children over 10 and adults.4 Suppose that these pulse rates are approximately normally distributed with a mean of 78 and a standard deviation of 12.
a. What proportion of adults will have pulse rates between 60 and 100?
b. What is the 95th percentile for the pulse rates of adults?
c. Would a pulse rate of 110 be considered unusual? Explain.
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