Author Question: Find the area under the standard normal curve between -1.48 and the ... (Read 37 times)

biggirl4568 · **on:** Jul 24, 2018

Find the area under the standard normal curve between -1.48 and the mean.

Question 2

Explain why nonempty, mutually exclusive events A and B must be dependent.

alvinum · **Reply #1 on:** Jul 24, 2018

Answer to Question 1

P(-1.78 < z< 0.0) = 0.4306

Answer to Question 2

If A and B are independent, P(A and B) = P(A) P(B) Since A and B are mutually exclusive, P(A and B) = 0 . Thus, 0 = P(A) P(B). This is impossible since P(A)0 and P(B)0 . Therefore, A and B are dependent.