3. A certain market has both an express checkout line and a super-express checkout line. Let A denote the number of customers in line at the express checkout at a particular time of day, and let B denote the number of customers in line at the super-express checkout at the same time. Suppose the joint PMF of A and B is as given in the following table. B 1 2 3 0.08 0.07 0.04 0.06 0.15 0.05 0.04 2 0.05 0.04 0.1 0.06 3 0.03 0.04 0.07 4. 0.01 0.05 0.06 a. What is P(A = B), that is, the probability that the numbers of customers in the two lines are identical? b. What is the probability that the total number of customers in the two lines is exactly four? At least four?

3. A certain market has both an express checkout line and a super-express checkout line. Let A denote the number of customers in line at the express checkout at a particular time of day, and let B denote the number of customers in line at the super-express checkout at the same time. Suppose the joint PMF of A and B is as given in the following table. B 1 2 3 0.08 0.07 0.04 0.06 0.15 0.05 0.04 2 0.05 0.04 0.1 0.06 3 0.03 0.04 0.07 4. 0.01 0.05 0.06 a. What is P(A = B), that is, the probability that the numbers of customers in the two lines are identical? b. What is the probability that the total number of customers in the two lines is exactly four? At least four?

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Description: 3. A certain market has both an express checkout line and a super-express checkout line. Let Adenote the number of customers in line at the express checkout at a particular time of day, andlet B denote the number of customers in line at the super-ex

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter2: Systems Of Linear Equations

Section2.4: Applications

Problem 1EQ: 1. Suppose that, in Example 2.27, 400 units of food A, 600 units of B, and 600 units of C are placed...

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