Online customer service is a key element to successful online retailing. According to a marketing survey, 37.5% of online customers take advantage of the online customer service. Random samples of 200 customers are selected.What is the population mean of all possible sample proportions? What is the standard error of all possible sample proportions? What proportion of the samples are likely to have between 35% and 40% who take advantage of online customer service?What % of the samples are likely to have less than 37.5% who take advantage of online customer service.

Let Xi be the random variable defined as Xi=1, if ith online customer take advantage0,…

Answered: Online customer service is a key…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Online customer service is a key element to successful online retailing. According to a marketing survey, 37.5% of online customers take advantage of the online customer service. Random samples of 200 customers are selected.
1. What is the population mean of all possible sample proportions?
2. What is the standard error of all possible sample proportions?
3. What proportion of the samples are likely to have between 35% and 40% who take advantage of online customer service?
4. What % of the samples are likely to have less than 37.5% who take advantage of online customer service.

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