Question: A sample of size n = 20 is randomly selected from a normal population with mean = 90 and standard deviation = 5. Find the

A sample of size n = 20 is randomly selected from a normal population with mean = 90 and standard deviation = 5. Find the following:

a.P (X > 95) c. P (82 < X <91)

b.P (X < 93) d. P ( X< 89 )

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