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(a)What percent of the scores are less than 19? (b) out of 1500 randomly selected scores, about how many would be expected to be greater than 21
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An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.
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(a)What percent of the scores are less than 19?
(b) out of 1500 randomly selected scores, about how...
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