2 Use the table below to answer the questions that follow X X² В 64 12 144 16 256 20 400 24 576 28 784 EX=108 EX²=2.224 a. What is the mean of the population? Use μ = b What is the mean u, of the sampling distribution of the sample mean? Note = #x c What is the variance a2 of the population mean? EX² Use:

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