Mathematics, 26.02.2020 02:47, shawnnoteman1234
A recent survey found that 25.9% of all adults over 70 wear glasses for driving. In a random sample of 81 adults over 70, what is the standard deviation of the number who wear glasses?
Answers: 2
Mathematics, 21.06.2019 21:20, pampam49
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.
Answers: 2
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