A variable of a population has mean and standard deviation . For a large sample size
Question:
a. Approximately % of all possible samples have means within σ/√n of the population mean, μ.
b. Approximately % of all possible samples have means within 2σ/√n of the population mean, μ.
c. Approximately % of all possible samples have means within 3σ/√n of the population mean, μ.
d. Approximately % of all possible samples have means within zα/2 of the population mean, μ.
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