A cell phone company believes that 90 percent of their customers are satisfied. They survey a sample of n = 100 customers and find that 82 say they are satisfied. In calculating the standard error of the sampling distribution (σp) the proportion to use is 0.82.

Question

Quizplus · Accepted Answer

The standard error of the sampling distribution should be calculated using the hypothesized population proportion (0.90), not the sample proportion (0.82).

A Cell Phone Company Believes That 90 Percent of Their