Thursday
March 26, 2015

Homework Help: statistics

Posted by betsy on Tuesday, June 18, 2013 at 8:04pm.

A study of peach trees found that the average number of peaches per tree was 625. The standard deviation of the population is 140 peaches per tree. Ascientist wishes to find 80% 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 16 peaches per tree?

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