Q1. The random variable X has an unknown mean but known variance of 8 i.e. X~N (μ, 8). A random sample of size 16 was collected which gave the sample mean of 7 and a sample variance of 11. Which of these is the distribution of this sample mean? A. X~N(7,8) C. X~N(7,0.5) B. X~N(µ, 0.5 ) D. X~N(7,11) ОА. А В. В С. С D. D

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