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The heights of pecan trees are normally distributed with a mean of 10 feet and a standard deviation of 2 feet Show all work Just the answer without

The heights of pecan trees are normally distributed with a mean of 10 feet and a standard

deviation of 2 feet.

14. Show all work. Just the answer, without supporting work, will receive no credit. 

(a) For a sample of 36 pecan trees, state the standard deviation of the sample mean (the "standard error of the mean"). (Round your answer to three decimal places) 

(b) Suppose a sample of 36 pecan trees is taken. Find the probability that the sample mean heights is between 9.5 and 10 feet. (Round your answer to four decimal places) 

Apr 10 2020 View more View Less

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