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Canadians who visit the United States often buy liquor and cigarettes, which are much cheaper in the United States. However, there are limitations. Canadians visiting in the United States for more than 2 days are allowed to bring into Canada one bottle of liquor and one carton of cigarettes. A Canada customs agent has produced the following joint probability distribution of the number of bottles of liquor and the number of cartons of cigarettes imported by Canadians who have visited the United States for 2 or more days.
a. Find the marginal probability distribution of the number of bottles imported.
b. Find the marginal probability distribution of the number of cigarette cartons imported.
c. Compute the mean and variance of the number of bottles imported.
d. Compute the mean and variance of the number of cigarette cartons imported.
e. Compute the covariance and the coefficient of correlation.
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