Suppose a random sample of 100 12-year-old boys were chosen and the heights of these 100 boys recorded. The sample mean height is 64 inches, and the sample standard deviation is 5 inches. You may assume heights of 12-year-old boys are normally distributed. Which interval below includes approximately 95% of the heights of 12-year-old boys? a. 63 to 65 inches. b. 39 to 89 inches. c. 54 to 74 inches. d. 59 to 69 inches. e. Cannot be determined from the information given. f. Can be determined from the information given, but none of the above choices is correct.
Suppose a random sample of 100 12-year-old boys were chosen and the heights of these 100 boys recorded. The sample mean height is 64 inches, and the sample standard deviation is 5 inches. You may assume heights of 12-year-old boys are normally distributed. Which interval below includes approximately 95% of the heights of 12-year-old boys? a. 63 to 65 inches. b. 39 to 89 inches. c. 54 to 74 inches. d. 59 to 69 inches. e. Cannot be determined from the information given. f. Can be determined from the information given, but none of the above choices is correct.
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Question
Suppose a random sample of 100 12-year-old boys were chosen and the heights of these
100 boys recorded. The sample mean height is 64 inches, and the sample standard deviation is 5
inches. You may assume heights of 12-year-old boys are normally distributed. Which interval
below includes approximately 95% of the heights of 12-year-old boys?
a. 63 to 65 inches.
b. 39 to 89 inches.
c. 54 to 74 inches.
d. 59 to 69 inches.
e. Cannot be determined from the information given.
f.
Can be determined from the information given, but none of the above choices is
correct.
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