Author Question: Let event A be that there are more than two defects and let event B be that there are four or fewer ... (Read 49 times)

WWatsford · **on:** Jun 24, 2018

Let event A be that there are more than two defects and let event B be that there are four or fewer defects. Which of the following statements is true?

A) P(A B) = 0.18
B) P(A B) = 0.07
C) P( ) = 0.58
D) P( ) = 0.89

Question 2

A college placement office conducted a survey of 100 engineers who had graduated from Stanford University. For these engineers, the mean salary was computed to be 72,000 with a standard deviation of 8,000.

The percentage of these engineers who earn more than 96,000 or less than 48,000 is:A) approximately 0.
B) at least 5.6 (1/18 of the engineers).
C) at most 5.6 (1/18 of the engineers).
D) at most 11.1 (1/9 of the engineers).