Question

suppose the height of the members of a population follow its normal distribution. If the mean height of the population is 72 inches and the standard deviation is 3 in, 68% of the population would have a height within which range? NO LINKS!!! ​

Answer 1

Find upper range and lower range by adding and subtracting standard deviation respectively.

Lower range

• Mean-Standard deviation
• 72-3
• 69

Upper range:-

• Mean+standard deviation
• 72+3
• 75

Option B is correct

Answer 2

○ B.
`\displaystyle 69\:inches\:to\:75\:inches`

Step-by-step explanation:

The Empirical Rule states that sixty-eight percent of the population will be within one standard deviation of the mean in height. Therefore, you perfourm the operations below:

`\displaystyle \boxed{75} = 3[1] + 72 \\ \boxed{69} = -3[1] + 72`

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