Results of a survey of fifty students indicate that 30 like red jelly beans, 29

Question

Results of a survey of fifty students indicate that 30 like red jelly beans, 29 like green jelly beans, and 17 like both red and green jelly beans. How many of the students surveyed like red or green jelly beans? Suppose you pay $1.00 to roll a fair die with the understanding that you will get back $3 for rolling a 2 or a 3, nothing otherwise. What are your expected winnings? There are 11 horses in a race. In how many ways can the first three positions of the order of the finish occur? (Assume there are no ties.) The odds in favor of a horse winning a race are posted as 8:7. Find the probability that the horse will lose the race. License plates are made using 3 letters followed by 3 digits. How many plates can be made if repetition of letters and digits is allowed? Identify the sampling technique used. A researcher randomly selects and interviews fifty male and fifty female teachers. systematic convenience random stratified cluster

Explanation / Answer

14.

Let

R = likes red
G = like green

Hence,

n(R U G) = n(R) + n(G) - n(R n G) = 30 + 29 - 17 = 42 [ANSWER]

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