Instruction 8-5
The actual voltages of power packs labelled as 12 volts are as follows: 11.77, 11.90, 11.64, 11.84, 12.13, 11.99, and 11.77.
-Referring to Instruction 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 level requires a wider interval to accommodate a greater range of potential values. Therefore, a 90% confidence interval would be narrower than a 99% confidence interval.

Instruction 8-5 The Actual Voltages of Power Packs Labelled as 12 Volts