TABLE 8-6
After an extensive advertising campaign, the manager of a company wants to estimate the proportion of potential customers that recognize a new product. She samples 120 potential consumers and finds that 54 recognize this product. She uses this sample information to obtain a 95% confidence interval that goes from 0.36 to 0.54.
-Referring to Table 8-6, 95% of the time, the proportion of people that recognize the product will fall between 0.36 and 0.54.

Question

Quizplus · Accepted Answer

The 95% confidence interval means that we are 95% confident that the true proportion of the population that recognizes the product falls between 0.36 and 0.54, not that 95% of the time the proportion will fall within this range.

TABLE 8-6 After an Extensive Advertising Campaign, the Manager of a Company