Mathematics, 22.05.2020 03:07 AlicR63701
Five automobiles of the same type are to be driven on a 300-mile trip. The first two will use an economy brand of gasoline, and the other three will use a name brand. Let X1,X2,X3,X4, and X5 be the observed fuel efficiencies (mpg) for the five cars. Suppose these variables are independently distributed with µ1 = µ2 = 20, µ3 = µ4 = µ5 = 24, and σ1 = σ2 = 4 for the economy brand. Define a random variable Y by
Y = (X1 + X2)/2 - (X3 + X4 + X5) / 3,
so that Y is a measure of the difference in efficiency between economy gas and premium gas. Compute P(0 <= Y) and P(-1 <= Y <= 1). [Hint: write Y = c1X1 + ... +c5X5.]
Answers: 3
Mathematics, 21.06.2019 13:30
Volume of a cylinder with a radius of 13 in and height of 30 in
Answers: 1
Mathematics, 21.06.2019 15:40
Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497
Answers: 3
Mathematics, 21.06.2019 19:30
Which of the points a(6, 2), b(0, 0), c(3, 2), d(−12, 8), e(−12, −8) belong to the graph of direct variation y= 2/3 x?
Answers: 2
Five automobiles of the same type are to be driven on a 300-mile trip. The first two will use an eco...
Mathematics, 13.01.2020 17:31
History, 13.01.2020 17:31
Geography, 13.01.2020 17:31
Mathematics, 13.01.2020 17:31
Geography, 13.01.2020 17:31
History, 13.01.2020 17:31
Mathematics, 13.01.2020 17:31
Biology, 13.01.2020 17:31
Mathematics, 13.01.2020 17:31
Mathematics, 13.01.2020 17:31
Chemistry, 13.01.2020 17:31