A study was performed on the sustainability behaviors of CPA corporations, based on the responses of 1,746 senior managers. Corporate sustainability refers to business practices designed around social and environmental considerations. The level of support senior managers have for corporate sustainability was measured quantitatively on a scale ranging from 0 to 160 points. The study provided the following information on the distribution of levels of support for sustainability: =71, = 27. Now consider a random sample of 50 senior managers and let x represent the sample mean level of support. Complete parts a through d below. a. Give the value of , the mean of the sampling distribution of X, and interpret the result. H=71 (Type an integer or a decimal. Do not round.) The mean of the sampling distribution of x is equal to the population mean. b. Give the value of *, the standard deviation of the sampling distribution of x, and interpret the result. = x (Round to two decimal places as needed.)