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

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, this interval requires the assumption that the distribution of the number of people recognizing the product has a normal distribution.