Question

2. Answer the following: a. Find P(z > -1.5). b. Given a normal distribution with a...

2. Answer the following:

a. Find P(z > -1.5).

b. Given a normal distribution with a mean of 25.5, a standard deviation of 1.2, find P(X < 27). ̅

c. Using part b, assume a sample of 7 is taken and find P(24 < ? < 26).

Math   Statistics-And-Probability   
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Answer #1

2.

a) Now ,

; From standard normal disteibution table

b) Let ,

Now ,

; From standard normal disteibution table

c) Now ,

; From standard normal disteibution table

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