SCENARIO 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.
-Referring to Scenario 8-4,it is possible that the 99% confidence interval calculated from the data will not contain the mean voltage for the entire population.

Question

Quizplus · Accepted Answer

Since the sample standard deviation is not given in the scenario, we cannot directly calculate the confidence interval. However, assuming a normal distribution and using a t-distribution with degrees of freedom equal to 6 (sample size - 1), we can calculate a range of possible values for the mean voltage with 99% confidence. If this range does not include the population mean for 12 volts, then the statement is true.

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