Researchers measured the Waist Sizes of 972 men in a study on body fat. The true mean and standard deviation of the Waist Sizes for the 972 men are 36.28 inches and 4.08 inches, respectively. Histograms of simulations that drew many samples of sizes2, 5,10, and 20(with replacement) are displayed in the accompanying table. The summary statistics for these simulations are shown to the right. Complete parts a through d.