Mathematics, 03.08.2019 02:20 ricardodeleon152
Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. after 12 hours of burning, a candle has a height of 19.8 centimeters. after 27 hours of burning, its height is 18.3 centimeters. what is the height of the candle after 22 hours?
Answers: 2
Mathematics, 21.06.2019 17:00
Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.
Answers: 1
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, 22.06.2019 00:00
At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?
Answers: 1
Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in...
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