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 19:50
Drag each tile into the correct box. not all tiles will be used. find the tables with unit rates greater than the unit rate in the graph. then tenge these tables in order from least to greatest unit rate
Answers: 2
Mathematics, 21.06.2019 21:30
Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups
Answers: 3
Problem 1. We asked 6 students how many times they rebooted their computers last week. There were 4...
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