Suppose a basketball player has made 265265 out of 312312 free throws. If the player makes the next 22 free throws, I will pay you $15$15. Otherwise you pay me $36$36.
Step 2 of 2 :
If you played this game 756756 times how much would you expect to win or lose? Round your answer to two decimal places. Losses must be entered as negative.
Answer
probability of making a free throw = (favorale outcome)/(total outcome)
= 265/312
Probability of making next 2 free throws = P(A)*P(B)
where P(A) = P(B) = 265/312
so, we get P(next 2 free throws) = 265/312 * 265/312 = 0.7214
Probability of not making next 2 free throws= 1 - 0.7214 = 0.2786
E[x] = P(win)*$15 -P(loss)*$36
= 0.7214*15 - 0.2786*36
= 10.821 - 10.030
= $0.7914 (net profit)
If we play 756 games
then, we get
=n*E[x]
= 756*0.7914
=$ 598.71 (rounded to 2 decimals)
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