Mathematics, 03.09.2020 01:01, shortyyashaun

How should a random heterogeneous material be sampled in order to construct a representative sample?

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Mathematics, 21.06.2019 17:20, kolbehoneyman

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers. a) one of the 400 passengers is selected uniformly at random. let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem

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Mathematics, 21.06.2019 19:50, JS28boss

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?

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Mathematics, 21.06.2019 21:00, famouzgal

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct

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Mathematics, 22.06.2019 02:20, dajahp

Asalesperson has january sales of $20,000(1,$20,000) and april sales of $80,000 (4,$80,000). what is the rate of change?