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Given a normal distribution with muequals103 and sigmaequals25​, and given you select a sample of n...

Given a normal distribution with muequals103 and sigmaequals25​, and given you select a sample of n equals 25​, complete parts​ (a) through​ (d).

d. There is a 63​% chance that Upper X overbar is above what​ value?

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Answer #1

Given that,

mean = = 103

standard deviation = = 25

n = 25

= 103

= / n = 25 / 25 = 5

P(Z < -0.33) = 0.37

z = -0.33

= z * + = -0.33 * 5 + 103 = 101.35

Value = 101.35

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