Question

question 3 of 25
if a sample mean is 94, which of the following is most likely the range of
possible values that best describes an estimate for the population mean?
a. (80, 112)
b. (76, 108)
c. (82, 114)
d. (78, 110)

Explanation:

The sample mean (94) should be the midpoint of the confidence interval for the population mean. Calculate the midpoint of each option:

• A: (80+112)/2=96
• B: (76+108)/2=92
• C: (82+114)/2=98
• D: (78+110)/2=94

Only option D has a midpoint equal to the sample mean, making it the most likely range.

Answer:

D. (78, 110)