Mathematics

Johnny Gibbs

24 June, 15:12

C) Suppose you take a sample of 250 (n) students. Suppose the sampling

distribution of sample means follow normal distribution, center (same as

population mean u) and standard-deviation (). Then,

i) Find the probability that a sample mean is below 52.5 inches.

j) Find the range of sample means to be in the middle 95% area.

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