A Study of Peach Trees Found That the Average Number

A study of peach trees found that the average number of peaches per tree was 1025. The standard deviation of the population is 35 peaches per tree. A scientist wishes to find the
99% confidence interval for the mean number of peaches per tree. How many trees does
She need to sample to obtain an average accurate to within 18 peaches per tree?

A) 23
B) 26
C) 21
D) 4

Correct Answer:

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