A sample of size n=20 is randomly selected from a normal population with mean μ =...

Question

Question

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

a) P(̅X>95)
b) P(82<̅X<91) c) P(̅X<93)
d) P(̅X<89)

math Statistics-And-Probability

Answer 1

Answer #1

Answer 2

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