Mathematics, 23.03.2021 17:50, Smartpotato9555
The sum of 3 times the value of x and 2 is equal to 4 less than 5 times the value of x. Which equation can be used to find the value of x?
A: 3x + 2 = 4 - 5x
B: 2x + 3 = 4 - 5x
C: 3x + 2 = 5x - 4
D: none of the above
Answers: 3
Mathematics, 21.06.2019 18:40, thepantsgirl
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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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