Showing posts with label Poisson Distribution. Show all posts
Showing posts with label Poisson Distribution. Show all posts

Wednesday, December 12

Poisson Distribution Sample Problems

Introduction to Poisson distribution sample problems:

In mathematics, Poisson distribution is a term used to find the number of events happened within a certain time interval. We can also say the Poisson distribution as a discrete probability distribution. A formula is used for finding the Poisson distribution. In this article we are giving some sample problems for Poisson distribution.

Explanation to Poisson Distribution Sample Problems:

The general for calculating the Poisson distribution is as follows.

f(x) = `(e^(-lambda)lambda^x)/(x!)`

Here,

`lambda` – average rate

x – Poisson random variable

e – base value for logarithm having a value = 2.718

Let us see some sample problems using this formula of Poisson distribution.

Example Problems to Poisson Distribution Sample Problems:

Example: 1

In a class room, 2 students are absent today. Find the possibility for exactly 3 students to be absent on tomorrow.Please express your views of this topic irrational numbers examples by commenting on blog.

Solution:

Given:

`lambda` = 2

x = 3

Step 1:

The general formula used for Poisson distribution is,

Poisson distribution =   `((e^(-lambda))(lambda^x))/(x!)`

Step 2:

e-2 = (2.718)-2

= 0.135

Step 3:

`lambda`  = 2

x = 3

`lambda^x` = (2)3 = 8

Step 4:

Substitute the obtained values on the formula.

`((e^-lambda)(lambda^x))/(x!)`  = `((0.135)(8))/(3!)`

= `1.08/(6)`

= 0.18

Answer: The possibility of getting 3 absentees on tomorrow is 0.18

Example: 2

In a book shop, 2 customers arrived today. Find the possibility for exactly 5 customers to be arrived on tomorrow.

Solution:

Given:

`lambda` = 2

x = 5

Step 1:

The general formula used for Poisson distribution is,

Poisson distribution =   `((e^(-lambda))(lambda^x))/(x!)`

Step 2:

e-2 = (2.718)-2

= 0.135

Step 3:

`lambda`  = 2

x = 5

`lambda^x` = (2)5 = 32

Step 4:

Substitute the obtained values on the formula.

`((e^-lambda)(lambda^x))/(x!)`  = `((0.135)(32))/(5!)`

= `4.32/(120)`

= 036

Answer: The possibility of getting 5 customers on tomorrow is 0.136

Practice Problems to Poisson Distribution Sample Problems:

Problem: 1

In a call center, 2 students are absent today. Find the possibility for exactly 4 students to be absent on tomorrow.

Answer: 0.09

Problem: 2

In a shop, 2 customers arrived today. Find the possibility for exactly 6 customers to be arrived on tomorrow.

Answer: 0.012