1 ) While playing blackjack with you friends, you decided to raise the stakes if
ID: 3271331 • Letter: 1
Question
1 ) While playing blackjack with you friends, you decided to raise the stakes if you the dealer, win, each of your friends $5, if one of your friends win, Then you pay the winner $15. If the probability of one of your friends winning is p=.25, then how much can you expect to win or lose in the long run!?
possible answer
a) win us$0.25 cents per play / b. lose US$15.00 per play / c. lose US $5.00 per play / d. win US$0.42 cents per play
2) A researcher records the number of apples purchased by customers at a grocery store. He finds that the probability that a customer purchased zero apples is p = .7, one apple is p = .28 , two apples is p = .50 , and three apple is p = .15 . How many apples can the researcher expect a customer to purchase per day in the long run? a more than one apple per day / b.one apple per day c. less than one apple per day d. none of these
Explanation / Answer
Ans:
2)p(0)=0.07
p(1)=0.28
p(2)=0.50
p(3)=0.15
Number of apples researcher can expect customer to purchase=0*0.07+1*0.28+2*0.5+3*0.15
=0+0.28+1+0.45
=1.73
Option a is correct.(more than one apple per day)
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