What is the preferred way for people to order fast food? A survey was conducted in 2009, but the sample sizes were not reported. Suppose the results, based on a sample of 100 males and 100 females, were as follows:
a. Given that a respondent is a male, what is the probability that he prefers to order at the drive-through?
b. Given that a respondent is a female, what is the probability that she prefers to order at the drive-through?
c. Is dining preference independent of gender? Explain.

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GENDER DINING PREFERENCE Dine inside Order inside to go Male 21 19 Female Total 12 10 29 Order at the drive-through Total 60 100 78 100 138 200