(a) If x is the sample mean, prove that the expected value of x,E(x) equals the population mean (μ). (b) Describe the process of testing hypothesis about population proportion of a given attribute. Read answer

(a) If x is the sample mean, prove that the expected value of x,E(x) equals the population mean (μ).
(b) Describe the process of testing hypothesis about population proportion of a given attribute.
Read answer

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