What is the 10th percentile, n, of a group of people’s pulse rates, where X= pul

Question

What is the 10th percentile, n, of a group of people’s pulse rates, where X= pulse rates of group of people, for which the mean is 75 and the standard deviation is 6? Assume a normal distribution. Round answer to nearest whole number What does n equal? What is the 10th percentile, n, of a group of people’s pulse rates, where X= pulse rates of group of people, for which the mean is 75 and the standard deviation is 6? Assume a normal distribution. Round answer to nearest whole number What does n equal? What does n equal?

Explanation / Answer

Mean is 75 and s is 6

for 10% we need to look at the z value for 1-0.1 i.e 90% and negate it. thus the z value is -1.28

thus answer is mean+z*s=75-1.28*6=67.32

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