Suppose x has a distribution with a mean of 80 and a standard deviation of 44. Random samples of size n = 64 are drawn. Find P(x bar < 91).

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

Icould really use some with this question.

5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811