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Assume that Z is a standard normal random variable. a) State the mean for Z. b)...

Assume that Z is a standard normal random variable.

a) State the mean for Z.

b) State the standard deviation for Z.

c) Find z α where α = 0.15. (decimal answer, round 3 decimal places)

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Answer #1

solution

normal distribution of mean and standard deviation

mean for Z=0

standard deviation for Z=1

Z = Z0.15 = 1.036 ( using z table )

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