Question: The random variable x has the following discrete probability distribution: LO9 x: 5 6 7 8 9 p(x:) .2 .3 .2 .1 .2 Since the

The random variable x has the following discrete probability distribution: LO9 x: 5 6 7 8 9 p(x:) .2 .3 .2 .1 .2 Since the values that x can assume are mutually exclusive events, the event 5x … 76 is the union of three mutually exclusive events:

5x = 56 ∪ 5x = 66 ∪ 5x = 76

a. Find P1x … 72.

b. Find P1x 7 72.

c. Find P1x … 92.

d. Find P1x = 82.

e. Find P1x … 6 or x 7 72.

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