Help with Math homework please!
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Mathematics, 21.06.2019 20:50
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.
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Mathematics, 21.06.2019 22:40
20.ju inces. which ordered pair is a viable solution if x represents the number of books he orders and y represents the total weight of the books, in ounces? (-3,-18) (-0.5, -3) (0,0) (0.5, 3)
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Mathematics, 21.06.2019 23:20
Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?
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Mathematics, 21.06.2019 23:30
The product of sin 30 degrees and sin 60 degrees is same as the product of
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History, 30.01.2021 08:10
Mathematics, 30.01.2021 08:10
Mathematics, 30.01.2021 08:10
Mathematics, 30.01.2021 08:10
Mathematics, 30.01.2021 08:10
Mathematics, 30.01.2021 08:10