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Question
The random variable xhas the following probability distribution:| x | f(x) |
| 0 | .25 |
| 1 | .20 |
| 2 | .15 |
| 3 | .30 |
| 4 | .10 |
a. Is this probability distribution valid? Explain and list the requirements for a valid probability distribution.
b. Calculate the expected value of x.
c. Calculate the variance of x.
d. Calculate the standard deviation of x.
Answer
This answer is hidden. It contains 37 characters.
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