A convenience store has two separate locations where customers can be checked out as they leave. These locations each have two cash registers and two employees who check out customers. Let X be the number of cash registers being used at a particular time for location 1 and Y the number being used at the same time for location 2. The joint probability function is given by the accompanying table. Complete parts (a) through (c) below. Click the icon to view the joint probability function. 31 I 51 (Simplify your answers.) (b) Give E(X) and Var(X). E(X)= 1.16 (Type an integer or a decimal. Round to two decimal places as needed.) 31 Var(X) = 0.6944 (Type an integer or a decimal. Round to four decimal places as needed.) (c) Give E(XIY =2) and Var(XIY=2). 54 E(XIY=2)= 37 (Simplify your answer.) Var(XIY=2)= (Simplify your answer.)
A convenience store has two separate locations where customers can be checked out as they leave. These locations each have two cash registers and two employees who check out customers. Let X be the number of cash registers being used at a particular time for location 1 and Y the number being used at the same time for location 2. The joint probability function is given by the accompanying table. Complete parts (a) through (c) below. Click the icon to view the joint probability function. 31 I 51 (Simplify your answers.) (b) Give E(X) and Var(X). E(X)= 1.16 (Type an integer or a decimal. Round to two decimal places as needed.) 31 Var(X) = 0.6944 (Type an integer or a decimal. Round to four decimal places as needed.) (c) Give E(XIY =2) and Var(XIY=2). 54 E(XIY=2)= 37 (Simplify your answer.) Var(XIY=2)= (Simplify your answer.)
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
Related questions
Question
100%
I need help with part c last question. I got 48/37 for var (X|Y = 2) in the end but it's incorrect.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps with 8 images
Recommended textbooks for you
College Algebra
Algebra
ISBN:
9781305115545
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
College Algebra
Algebra
ISBN:
9781305115545
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning