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For a normal population with a mean equal to 83 and a standard deviation equal to...

For a normal population with a mean equal to 83 and a standard deviation equal to 13 ​, determine the probability of observing a sample mean of 89 or less from a sample of size 8 . Click here to view page 1 of the cumulative standardized normal table. LOADING... Click here to view page 2 of the cumulative standardized normal table. LOADING... Upper P left parenthesis x overbar less than or equals 89 right parenthesis

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Answer #1

µ = 83

sd = 13

n = 8

                        

                         = P(Z < 1.31)

                         = 0.9049

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