Mathematics, 15.01.2021 23:10 briannaandmakayla33
To make lemonade, the ratio of cups of water to cups of lemon concentrate is 5:2, If you need 28 cups of lemonade, how many cups of lemon concentrate will you need?
A. 12 cups
B. 16 cups
C. 8 cups
D. 20 cups
Answers: 2
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Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.
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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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