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Nataliya [291]
3 years ago
13

Harlene tosses two number cubes. If a sum of 8 or 12 comes up, she gets 9 points. If not, she loses 2 points. What is the expect

ed value of the number of points for one roll?
Mathematics
2 answers:
Amanda [17]3 years ago
5 0
P(8 or 12) = 1/6
P(not 8 or 12 = 5/6
Let the expected points fro one roll be X.
E(X)=9\times\frac{1}{6}-2\times\frac{5}{6}=-\frac{1}{6}\ points
The answer is -(1/6) points.
kirill115 [55]3 years ago
3 0

Answer:

-(1/6)

Step-by-step explanation:

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