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A chain of fast-food restaurants offers an instant-winner promotion. Drink cups and packages of French fries come with peel-off coupons. According to the promotion, 1 in 20 packages is a winner.
(a) A group of friends buys four drinks and three orders of fries. What's the probability that they win, assuming the prizes are attached to the cups and fry containers independently?
(b) Assuming independence, how many drinks and fries would the group have to order to have a 50% chance of finding a winner?
(c) Use Boole's inequality to estimate the probability in part (a). Do you expect this approach to work well in this application?
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in the journal knowledge quest januaryfebruary 2002 education professors at the university of southern california
Based on the answers to a through d, decide whether or not to reject the null hypothesis at the given significance level. Explain your conclusion in the context of the problem.
What is an appropriate sample space for this experiment?
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