Suppose you open a shop in UTC plaza and you need to estimate the number of customers. During the lunch time, the number of students coming to UTC plaza in a time period is a random variable of Poisson distribution, X ~ Poisson(\), \ > 0. Among these X students, you observe that each student will visit your shop with probability p independently, where 0 < p < 1. Let Y be the number of students that visit your shop (in a time period) and Z be the number of the student who does not visit. (Note: To check you understand the question correctly, X should be equal to Y + Z by definition.) (a) Compute joint distribution of (Y, Z). (b) Show Y, Z are independent.
Suppose you open a shop in UTC plaza and you need to estimate the number of customers. During the lunch time, the number of students coming to UTC plaza in a time period is a random variable of Poisson distribution, X ~ Poisson(\), \ > 0. Among these X students, you observe that each student will visit your shop with probability p independently, where 0 < p < 1. Let Y be the number of students that visit your shop (in a time period) and Z be the number of the student who does not visit. (Note: To check you understand the question correctly, X should be equal to Y + Z by definition.) (a) Compute joint distribution of (Y, Z). (b) Show Y, Z are independent.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:Suppose you open a shop in UTC plaza and you need to estimate the number of customers.
During the lunch time, the number of students coming to UTC plaza in a time period is a random
variable of Poisson distribution, X ~ Poisson(\), \ > 0. Among these X students, you observe that
each student will visit your shop with probability p independently, where 0 < p < 1. Let Y be the
number of students that visit your shop (in a time period) and Z be the number of the student who
does not visit.
(Note: To check you understand the question correctly, X should be equal to Y + Z by definition.)
(a) Compute joint distribution of (Y, Z).
(b) Show Y, Z are independent.
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