STATISTICS AND PROBABILITY Multiple Choice! No long explaantion needed. THUMBS-UP will be given! At a certain Senior High School, a random sample of 20 male students was taken and found that their average height is 64.36 inches with a standard deviation of 5.85 inches. A. If a 90% confidence interval is to be constructed for the true average height of the male students, which of the following degrees of freedom must be used? a. 22 b. 19 c. 21 d. 20 B. Construct a 90% confidence interval for the true average height of the male students. a. (62.10, 66.62) b. (58.51, 70.21) c. (63.85, 64.87) d. (61.20, 62.66) C. Which of the following is the best interpretation of the result. a. There is a 90% chance that the true average height of the male students is within the interval. b. We are 90% confident that the true average height of the male students is between the lower limit and upper limit c. We are 90% confident that the true average height of the male students is 64.36 inches. d. We are 90% confident that the sample average height is within the interval. Previous Next >
STATISTICS AND PROBABILITY
Multiple Choice! No long explaantion needed. THUMBS-UP will be given!
At a certain Senior High School, a random sample of 20 male students was taken and found that their average height is 64.36 inches with a standard deviation of 5.85 inches.
A. If a 90% confidence interval is to be constructed for the true average height of the male students, which of the following degrees of freedom must be used?
a. 22
b. 19
c. 21
d. 20
B. Construct a 90% confidence interval for the true average height of the male students.
a. (62.10, 66.62)
b. (58.51, 70.21)
c. (63.85, 64.87)
d. (61.20, 62.66)
C. Which of the following is the best interpretation of the result.
a. There is a 90% chance that the true average height of the male students is within the interval.
b. We are 90% confident that the true average height of the male students is between the lower limit and upper limit
c. We are 90% confident that the true average height of the male students is 64.36 inches.
d. We are 90% confident that the sample average height is within the interval.
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