High School

Suppose the heights of the members of a population follow a normal distribution. If the mean height of the population is 72 inches and the standard deviation is 3 inches, 68% of the population will have a height within which range?

A. 59 inches to 71 inches
B. 53 inches to 77 inches
C. 62 inches to 68 inches
D. 69 inches to 75 inches

Answer :

68% of the population will have a height within the range of 69 inches to 75 inches. None of the provided options match this range.

Calculating Range using Mean and Standard Deviation

In a normal distribution, approximately 68% of the values fall within one standard deviation of the mean.

Given:

mean height = 72 inches

standard deviation = 3 inches,

We can determine the range within which 68% of the population's heights will fall.

To calculate this range, we subtract and add one standard deviation from the mean:

Lower bound: Mean - Standard Deviation

= 72 - 3

= 69 inches

Upper bound: Mean + Standard Deviation

= 72 + 3

= 75 inches

Therefore, 68% of the population will have a height within the range of 69 inches to 75 inches.

Learn more about standard deviation here:

https://brainly.com/question/24298037

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