The random variable x has the following discrete probability distribution:
x | 10 | 12 | 13 | 14 | 15 |
p(x) | .2 | .3 | .2 | .1 | .2 |
Since the values that x can assume are mutually exclusive events, the event {x ≤ 12} is the union of three mutually exclusive events:
{x = 10} ∪ {x= 11} ∪ {x= 12}
a. Find P(x≤ 12).
b. Find P(x> 12).
c. Find P(x≤ 14).
d. Find P(x= 14).
e. Find P(x≤ 11 or x> 12).
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