Mathematics, 25.03.2020 20:45 kebo63
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 premium brand. Let X1, X2, X3, X4 and X5 be random variables representing the fuel efficiencies (mpg) for the five cars. Suppose these variables are independent and normally distributed with mu1 = mu2 = 20, mu3 = mu4 = mu5 = 21, and sigma 2 = 4 for the economy brand and 3.5 for premium 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 le Y) and P(-1 le Y le 1). [Hint: write Y = c1X1 + ... +c5X5.]
Answers: 1
Mathematics, 21.06.2019 13:10
Which of the following would represent the sum of 3 consecutive integers if x is the first integer?
Answers: 3
Mathematics, 21.06.2019 18:50
Given: pqrs is a parallelogram prove: pr and qs bisect each other at t
Answers: 1
Mathematics, 21.06.2019 19:00
What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2
Answers: 2
Mathematics, 21.06.2019 19:50
Type the correct answer in each box. spell all words correctly. a sequence of transformations maps ∆abc onto ∆a″b″c″. the type of transformation that maps ∆abc onto ∆a′b′c′ is a . when ∆a′b′c′ is reflected across the line x = -2 to form ∆a″b″c″, vertex of ∆a″b″c″ will have the same coordinates as b′.
Answers: 1
Five automobiles of the same type are to be driven on a 300-mile trip. The first two will use an eco...
Mathematics, 05.05.2020 12:40
Biology, 05.05.2020 12:40
Health, 05.05.2020 12:40
Physics, 05.05.2020 12:40
Mathematics, 05.05.2020 12:40
Mathematics, 05.05.2020 12:40
History, 05.05.2020 12:40
Chemistry, 05.05.2020 12:40
Mathematics, 05.05.2020 12:40
Mathematics, 05.05.2020 12:40
Chemistry, 05.05.2020 12:40
Social Studies, 05.05.2020 12:40