Mathematics, 18.05.2021 19:00 nekathadon
A toy manufacturer wants to see how long, on average, a new toy captures children's attention. He tests 16 children selected at random and finds that their mean attention span is 29 minutes with a standard deviation of 8 minutes. If we assume that attention spans are normally distributed, find a 95% confidence interval for the mean attention span of children playing with this new toy. Then find the lower limit and upper limit of the 95% confidence interval.
Answers: 2
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Multiplying an even number of negative numbers gives an answer that is choose from:
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Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.
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A toy manufacturer wants to see how long, on average, a new toy captures children's attention. He te...
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