Mathematics, 26.06.2019 07:30 aaronlikly
The ratio of girls to boys in a lunchroom is 3 to 4. there are 48 boys. how many girls are there?
Answers: 2
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
Corresponding angles are a. always b. sometimes c. never congruent
Answers: 1
Mathematics, 22.06.2019 01:10
|2x - 6| > 10 {x|x < -8 or x > 2} {x|x < -2 or x > 8} {x|-2 < x < 8}
Answers: 2
The ratio of girls to boys in a lunchroom is 3 to 4. there are 48 boys. how many girls are there?...
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