TABLE 8-5
The actual voltages of power packs labeled as 12 volts are as follows: 11.77, 11.90, 11.64, 11.84, 12.13, 11.99, and 11.77.
-Referring to Table 8-5, a 90% confidence interval calculated from the same data would be narrower than a 99% confidence interval.

Question

Quizplus · Accepted Answer

A higher confidence interval requires a larger margin of error, which leads to a wider interval. So, a 90% confidence interval would be narrower than a 99% confidence interval.

TABLE 8-5 The Actual Voltages of Power Packs Labeled as 12 Volts