Mathematics, 31.03.2021 23:20 daijafoster0
Problem 1. We asked 6 students how many times they rebooted their computers last week. There were 4 Mac users and 2 PC users. The PC users rebooted 2 and 3 times. The Mac users rebooted 1, 2, 2 and 8 times. Let C be a Bernoulli random variable representing the type of computer of a randomly chosen student (Mac = 0, PC = 1). Let R be the number of times a randomly chosen student rebooted (so R takes values 1,2,3,8).
(a) Create a joint probability table for C and R. Be sure to include the marginal probability mass functions.
(b) Compute E(C) and E(R).
(c) Determine the covariance of C and R and explain its significance for how C and R are related. (A one sentence explanation is all that’s called for.
Are R and C independent?
(d) Independently choose a random Mac user and a random PC user. Let M be the number of reboots for the Mac user and W the number of reboots for the PC user.
(i) Create a table of the joint probability distribution of M and W , including the marginal probability mass functions.
(ii) Calculate P (W >M).
(iii) What is the correlation between W and M?
Answers: 2
Mathematics, 21.06.2019 18:30
Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.
Answers: 1
Mathematics, 21.06.2019 21:00
The function below show how much jayna and hannah charge for babysitting. which statement best compares the two plants?
Answers: 1
Problem 1. We asked 6 students how many times they rebooted their computers last week. There were 4...
Mathematics, 23.11.2021 22:10
Mathematics, 23.11.2021 22:10
Mathematics, 23.11.2021 22:10
Geography, 23.11.2021 22:10
Mathematics, 23.11.2021 22:10
Chemistry, 23.11.2021 22:10
Mathematics, 23.11.2021 22:10
Mathematics, 23.11.2021 22:10
English, 23.11.2021 22:10
Advanced Placement (AP), 23.11.2021 22:10