1 Answer

standard deviation Suppose that the probabilities of a customer purchasing​ 0, 1, or 2 books at a book store are 0.3​, 0.3​, and 0.4​, respectively

2518 Views
  • 0
Votes
name tutor

A PHP Error was encountered

Severity: Warning

Message: Undefined array key "userid"

Filename: views/question.php

Line Number: 212

Backtrace:

File: /home/statpmkj/public_html/application/views/question.php
Line: 212
Function: _error_handler

File: /home/statpmkj/public_html/application/controllers/Questions.php
Line: 416
Function: view

File: /home/statpmkj/public_html/index.php
Line: 315
Function: require_once

Asked: Jul 05,2019 In: Distributions
1 Answer
name tutor Punditsdkoslkdosdkoskdo
Asked: Jul 05,2019 In: Distributions

standard deviation Suppose that the probabilities of a customer purchasing​ 0, 1, or 2 books at a book store are 0.3​, 0.3​, and 0.4​, respectively

Suppose that the probabilities of a customer purchasing​ 0, 1, or 2 books at a book store are 0.3​, 0.3​, and 0.4​, respectively. What is the standard deviation of this​ customer's book​ purchases?


distribution and probabilities
name
  • 0
tutor
tutor Added an answer on Jul 05,2019
x p x.p x.^2.p
0 0.3 0 0
1 0.3 0.3 0.3
2 0.4 0.8 1.6
       
sum   1.1 1.9
       

Standard deviations = sqrt(1.9 - 1.1^2) =   0.831

  • 0
Reply Report


Popular Questions

Trending Tags

frequency distributions of data values confidence interval mean mean estimation Business analysis project help