A normal population has a mean of 64 and a standard deviation of 13. You select a random sample of 9.?

Compute the probability that the sample mean is: (Round your z values to 2 decimal places and final answers to 4 decimal places):

(a) Greater than 66.


(b) Less than 62.


(c) Between 62 and 66.

Update: (I am able to find the z values, but I am getting lost when it comes to the rest of the calculations.)
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