The sum of the probabilities of collectively exhaustive events must equal 1.
Indicate whether the statement is true or false
Question 2
Suppose X is a normal random variable with mean of 70 and standard deviation of 4. The Z-score was calculated for a number, and it was 2.85. What is X?
A) 58.6
B) 81.4
C) 65.8
D) 75.7