Fred’s surfboard shop makes surfboards by hand. The number of surfboards that Fred makes during a week depends on the wa

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Fred’s surfboard shop makes surfboards by hand. The number of
surfboards that Fred makes during a week depends on the wave
conditions. Fred has estimated the following probabilities for
surfboard for production for the next week.
Number of surfboards 5 6 7 8 9 10
Probability 0.13 0.22 0.31 0.17 0.13
0.04 .
Let event A be that Fred produces more than six surfboards. Let
event B be that Fred produces less than eight surfboard production
for the next week. Which of the following is true?
Select one: a. Events A and B are mutually exclusive. b. The
probability of the complement of A is 0.13. c. Events A and B are
collectively exhaustive. d. The probability of the intersection of
events A and B is 0.70.