Question 12 2.5 pts A certain food truck serves only barbecue sandwiches. The owner finds that 23% of his customers purc
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Question 12 2.5 pts A certain food truck serves only barbecue sandwiches. The owner finds that 23% of his customers purc
Question 12 2.5 pts A certain food truck serves only barbecue sandwiches. The owner finds that 23% of his customers purchase 3 sandwiches, 40% of his customers purchase 2 sandwiches, and the rest of his customers purchase 1 sandwich. Let X1, X, be the number of sandwiches purchased by each of a random sample of two customers. Consider the sample mean X. Find P(X < 2). (Answer as a decimal number, and round to 3 decimal places). (You should tabulate all possible pairs 11, 12 of values of X1, X2, along with the joint probabilities p(11, 12), and their mean 7. Also, you should find the sampling distribution of X. Be careful to find P(X < 2) and NOT P(X < 2).)
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