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Someone me what is the area of this figure? 18m 18m 8m 16m
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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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At a book fair, joe bought 24 books at 3 for $5 and had $2 left. how much money did he have at first?
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Please help me with 1-6 (means) ASAP
I will give brainiest
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I will give brainiest
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