Find the value of X
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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.
Answers: 3
Mathematics, 21.06.2019 21:40
What is the value of x in the equation 1.5x+4-3=4.5(x-2)?
Answers: 2
Mathematics, 21.06.2019 22:30
Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.
Answers: 1
Chemistry, 29.01.2020 09:49
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History, 29.01.2020 09:49
Mathematics, 29.01.2020 09:49
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Mathematics, 29.01.2020 09:49
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