Alice walks into a post office with 2 clerks. both clerks are in the midst of serving
customer...
Mathematics, 10.11.2019 06:31 marygatewell385
Alice walks into a post office with 2 clerks. both clerks are in the midst of serving
customers, but alice is next in line. the clerk on the left takes an expo(λ1) time to
serve a customer, and the clerk on the right takes an expo(λ2) time to serve a customer. let t be the amount of time alice has to wait until it is her turn.
(a) write down expressions for the mean and variance of t, in terms of double integrals
(which you do not need to evaluate).
(b) find the distribution, mean, and variance of t, without using calculus.
Answers: 3
Mathematics, 21.06.2019 19:20, cody665
1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?
Answers: 2
Mathematics, 21.06.2019 20:40, keananashville
The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2
Answers: 2
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