Asked by Tammy
The height of a certain species of a tree are normally distributed with a mean of 30ft and stand dev of 4ft. If a random sample of 16 of these trees is taken, what is the probability that the sample mean is less than 32fy?
Answers
Answered by
Kuai
z = (32-30)/4sqrt(16))
z = 2.
Z table
z = 2.
Z table
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