TABLE 8-4
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.
-True or False: Referring to Table 8-4,a 90% confidence interval calculated from the same data would be narrower than a 99% confidence interval.

Question

Quizplus · Accepted Answer

A higher confidence level results in a wider interval, as there is a greater chance that the true value falls within the range. Therefore, a 99% confidence interval would be wider than a 90% confidence interval.

TABLE 8-4 The Actual Voltages of Power Packs Labeled as 12 Volts