Suppose a Sample of N = 50 Items Is Drawn

Multiple Choice

Suppose a sample of n = 50 items is drawn from a population of manufactured products and the weight,X,of each item is recorded.Prior experience has shown that the weight has a probability distribution with μ = 180 grams and σ = 75 grams.Which of the following is true about the sampling distribution of the sample mean if a sample size of 15 is selected?

A) The shape of the sample distribution is approximately normal.
B) The standard deviation of the sampling distribution is 75 grams.
C) The mean of the sampling distribution is 180 grams.
D) All of the above are correct.