Consider the following discrete probability distribution. x 15 22 34 40 P(X = x) 0.13 0.49...
Consider the following discrete probability
distribution.
| x | 15 | 22 | 34 | 40 |
| P(X = x) | 0.13 | 0.49 | 0.24 | 0.14 |
a. Is this a valid probability distribution?
-
Yes, because the probabilities add up to 1.
-
No, because the gaps between x values vary.
b. What is the probability that the random
variable X is less than 38? (Round your answer to
2 decimal places.)
c. What is the probability that the random
variable X is between 10 and 28? (Round your
answer to 2 decimal places.)
d. What is the probability that the random
variable X is greater than 20? (Round your answer
to 2 decimal places.)
Homework Answers
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Consider the following discrete probability
distribution.
x
15
22
34
40
P(X = x)
0.13
0.49...
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