TABLE 8-10
The president of a university would like to estimate the proportion of the student population that owns a personal computer. In a sample of 500 students, 417 own a personal computer.
-Referring to Table 8-10, a 99% confidence interval will contain 99% of the student population who own a personal computer.

Question

Quizplus · Accepted Answer

Table 8-10 provides critical values for t-distributions at different confidence levels and degrees of freedom. It does not provide information on the proportion of a population, so it cannot be used to construct a confidence interval for the proportion of university students who own a personal computer. A 99% confidence interval can be constructed using the formula p ± z*(sqrt(p*(1-p)/n)), where p is the sample proportion, n is the sample size, and z* is the critical value from the standard normal distribution for the desired confidence level.

TABLE 8-10 the President of a University Would Like to Estimate the Estimate