Suppose X is a non-standard normal variable, with a mean of 145, and std deviation of 10 (i.e. X~N(145,10)). You have an observation (z) on a standard normal scale (i.e. Z~N(0,1)). If z =  0.72, what is it on an X scale?

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A: The provided information are:

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A:

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A: GivenMean(μ) = 190Standard Deviation(σ) =17and z=-0.74

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A: Given : sample mean= x̅ = 7.766 population mean=μ = 7.97