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 95% confidence interval for the mean voltage of the power pack is wider than a 99% confidence interval.

Question

Quizplus · Accepted Answer

A 95% confidence interval is narrower than a 99% confidence interval because a higher confidence level requires a wider interval to capture the true mean with more certainty.

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