A sporting goods store has a special sale on three brands
Chapter 0, Problem 7.123(choose chapter or problem)
A sporting goods store has a special sale on three brands of tennis ballscall them D, P, and W. Because the sale price is so low, only one can of balls will be sold to each customer. If 40% of all customers buy Brand W, 35% buy Brand P, and 25% buy Brand D and if x is the number among three randomly selected customers who buy Brand W, what is the probability distribution of x? 7.120 Suppose that your statistics professor tells you that the scores on a midterm exam were approximately normally distributed with a mean of 78 and a standard deviation of 7. The top 15% of all scores have been designated As. Your score is 89. Did you receive an A? Explain. the sale price is so low, only one can of balls will be soldto each customer. If 40% of all customers buy Brand W,35% buy Brand P, and 25% buy Brand D and if x is thenumber among three randomly selected customers whobuy Brand W, what is the probability distribution of x?
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