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Mathematics, 27.04.2021 03:10 brook633
Teresa's company makes solid metal balls for various industrial uses. A customer wants lead balls that have a diameter of
6 in. If Teresa must make 80 of these balls, how much lead will she need?
Use 3.14 for it, and do not round your answer.
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Mathematics, 21.06.2019 20:50, brea2006
An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.
Answers: 3
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Teresa's company makes solid metal balls for various industrial uses. A customer wants lead balls th...
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