5.26 Newspaper sales You are the director of newspaper sales for the local paper. Each customer has signed up for either weekday delivery or weekend delivery. You record whether he or she received the delivery as Y for yes and N for no. The probabilities of the customer receiving the newspaper are as follows. NN NY YN YY Outcome (Weekday, Weekend) 0.5 0.05 0.20 0.25 Probability Display the outcomes in a contingency table, using the rows as the weekend event and the columns as the а. weekday event. b. Let W denote the event that the customer bought a newspaper during the week and S be the event that he or she got it on the weekend (S for Saturday/Sunday). Find P(W) and P(S) Explain what the event W and S means and find P(W and S). d. Are W and S independent events? Explain why you would not normally expect customer choices to be independent. с.

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