Which value shows 7/8 written as a percent? * A. 87.5% B. 0.875% C. 8.75% D. 875%
2 answers:
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Answer:
b. $28
Step-by-step explanation:
We have these following probabilities:
0.4 = 40% probability of $40
0.2 = 20% probability of $30
0.2 = 20% probability of $20
0.2 = 20% probability of $10
The expected value is:
We multiply each value by its probability. So
So the correct answer is:
b. $28