Suppose x has a distribution with a mean of 70 and a standard deviation of 52, Random samples of size n = 64 are drawn. (a) Describe the x distribution, x has a Poisson distribution. O x has a normal distribution. O x has a geometric distribution. O x has an unknown distribution, O x has an approximately normal distribution. O x has a binomial distribution. Compute the mean and standard deviation of the distribution. ( For each answer, enter a number.) (b) Find the z value corresponding to x - 83. (Enter an exact number.) E - (c) Find P(x