x P(X = x) x*P(x)
6 10 1/6 10/6
4 or 5 -5 2/6 -10/6
1, 2, 3 -4 3/6 -12/6
sum -12/6 = -2
Alycia F.
asked 04/04/22Suppose that you are offered the following "deal." You roll a die. If you roll a six, you win $10. If you roll a four or five, you win $5. If you roll a one, two, or three, you pay $4.
Construct a PDF. (Enter your answers for P(X = x) as fractions. Round your answers for x · P(X = x) to two decimal places.)
| X | P(X = x) | x · P(X = x) | ||
| 6 | 10 | |||
| 4 or 5 | 5 | |||
| 1, 2, or 3 | -4 |
x P(X = x) x*P(x)
6 10 1/6 10/6
4 or 5 -5 2/6 -10/6
1, 2, 3 -4 3/6 -12/6
sum -12/6 = -2
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