Question
According to a survey, only 15% of customers who visited the website of a major retail store made a purchase. Random samples of size 50
According to a survey, only 15% of customers who visited the website of a major retail store made a purchase. Random samples of size 50 are selected.
1. What is the average of all the sample proportions of customers who will make a purchase after visiting the website?
2. What is the standard deviation of all the sample proportions of customers who will make a purchase after visiting the website?
3. What proportion of the samples will have between 20% and 30% of customers who will make a purchase after visiting the website?
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Introduction To Probability And Statistics
Authors: William Mendenhall, Robert Beaver, Barbara Beaver
14th Edition
1133103758, 978-1133103752
