Author Question: When A and B are mutually exclusive, P(A or B) can be found by adding P(A) and P(B). Indicate ... (Read 53 times)

Bernana · **on:** Aug 1, 2018

When A and B are mutually exclusive, P(A or B) can be found by adding P(A) and P(B).
Indicate whether the statement is true or false

Question 2

Tanner took a statistics test whose mean was 80 and standard deviation was 5 . The total points possible was 100 . Tanner's score was 2 standard deviations below the mean. What was Tanner's score, rounded to the nearest whole number?
a. 78
b. 70
c. 90
d. None of these choices.