A variable of a population has a mean of μ = 84 and a standard deviation of a = 21. a. Identify the sampling distribution of the sample mean for samples of size 49. b. In answering part (a), what assumptions did you make about the distribution of the variable? c. Can you answer part (a) if the sample size is 25 instead of 49? Why or why not? a. What is the shape of the sampling distribution? O bimodal normal O skewed O uniform

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