TABLE 8-7
A hotel chain wants to estimate the mean number of rooms rented daily in a given month. The population of rooms rented daily is assumed to be normally distributed for each month with a standard deviation of 24 rooms. During February, a sample of 25 days has a sample mean of 37 rooms.
-Referring to Table 8-7, a 90% confidence interval calculated from the same data would be narrower than a 99% confidence interval.

Question

Quizplus · Accepted Answer

Table 8-7 shows that as the confidence level increases, the width of the confidence interval also increases. Therefore, a 90% confidence interval would be narrower than a 99% confidence interval.

TABLE 8-7 a Hotel Chain Wants to Estimate the Mean Number of Number