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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.
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Mathematics, 21.06.2019 22:20, KillerSteamcar
Which strategy is used by public health to reduce the incidence of food poisoning?
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Mathematics, 22.06.2019 02:30, haimar8710
Plz : denver is about 5,200 feet above sea level. which number line best represents this integer?
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Mathematics, 22.06.2019 03:20, trying1to1pass
Given a normal distribution with µ=20 and σ = 4, what is the probability that x> 24 x< 24 x< 24 or x> 24
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