A study of 100 apple trees showed that the average number of apples per tree was 2000. The standard deviation of the population is 150. Which of the following is the 95% confidence interval for the mean
Number of apples for all trees?
A) (1975.3, 2024.7)
B) (1970.6, 2029.4)
C) (1967.7, 2032.3)
D) (1965.1, 2034.9)

Question

Quizplus · Accepted Answer

The 95% confidence interval is calculated using the formula: mean ± (Z * (standard deviation/sqrt(n))). Here, Z is 1.96 for 95% confidence, the mean is 2000, the standard deviation is 150, and n is 100. This results in the interval (1970.6, 2029.4).

A Study of 100 Apple Trees Showed That the Average