What's More Grocery Items The probabilities that a customer will buy 1, 2, 3, 4 or 5 items in a grocery store are 311.2 and 2 10'10'10'10 respectively. What is the average number of item that 10 a costumer will buy? Solution: Number of Items X Probability P(X) X · P(X) 1 3/10 2 1/10 3 1/10 4 2/10 3/10 Ex-Pcx) = Conclusion:

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