Question

Suppose the mean height for men is 70 inches with a standard deviation of 2 inches....

Suppose the mean height for men is 70 inches with a standard deviation of 2 inches. What percentage of men are more than 72 inches tall?

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Answer #1

Let X denote the height of men.

Now, we can assume the heights are normally distributed.

Thus, (X is in inches)

the standard normal distribution.

Now, we need to find the percentage of men taller than 72 inches, which is given by:

which is the required answer.

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