Mathematics, 21.09.2021 09:50 hailscooper7363
The lifespans of crocodiles have an approximately Normal distribution, with a mean of 18 years and a standard
deviation of 2.6 years. What proportion of crocodiles live between 17.5 and 20.5 years?
Find the Z-table here.
0.3147
0.4068
0.5932
0.6853
Answers: 2
Mathematics, 21.06.2019 15:00
Answer this question only if you know the 30 points and
Answers: 1
Mathematics, 21.06.2019 17:20
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
Answers: 3
The lifespans of crocodiles have an approximately Normal distribution, with a mean of 18 years and a...
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