A random sample of 500 customers at a large retail store was selected.These customers were asked whether they had a positive experience the last time they shopped there.Only 50 customers said that they did not have a positive experience.Thus,the population parameter for proportion of customers who did have a positive experience is .90.

Question

Quizplus · Accepted Answer

We cannot infer the population parameter for proportion of customers who had a positive experience from the information provided. The sample proportion is 1 - 50/500 = 0.9, but we cannot generalize this to the entire population. We need to know more about the sampling method and the characteristics of the population to make such an inference.

A Random Sample of 500 Customers at a Large Retail