The area to the right of z = 1.52 is 0.4357 Indicate whether ...

[karlynnae]

The area to the right of z = 1.52 is 0.4357
  Indicate whether the statement is true or false

Question 2

Suppose that A and B are two events defined on a common sample space and that the following probabilities are known: P(A) = 0.4, P(B) = 0.3, and P(B  A) = 0.2 . Find P(A or B).

[tuwy]

Answer to Question 1

F

Answer to Question 2

Since P(A and B) = P(A) P(B  A) = (0.4)(0.2) = 0.08, then P(A or B) = P(A) + P(B)  P(A and B) = 0.4 + 0.3  0.08 = 0.62.

[karlynnae]

Thanks for the timely response, appreciate it

[phuda]

Excellent