Suppose x has a distribution with a mean of 20 and a standard deviation of 4. Random samples of size n = 64 are drawn. In USE SALT (a) Describe the x distribution and compute the mean and standard...

Extracted text: Suppose x has a distribution with a mean of 20 and a standard deviation of 4. Random samples of size n = 64 are drawn. In USE SALT (a) Describe the x distribution and compute the mean and standard deviation of the distribution. x has a geometric x distribution with mean u, = and standard deviation o, = (b) Find the z value corresponding to > Y= 20.5. 20.5 (c) Find P(x < 20.5).="" (round="" your="" answer="" to="" four="" decimal="" places.)="" p(x="">< 20.5)="">