A recent survey of 50 executives who were laid off from their previous position revealed it took a mean of 26 weeks for them to find another position. The standard deviation of the sample was 6.2 weeks.
Construct a 95 percent confidence interval for the population mean. Is it reasonable that the population mean is 28 weeks? Justify your answer.© BrainMass Inc. brainmass.com March 21, 2019, 5:59 pm ad1c9bdddf
(1) Construct a 95 percent confidence interval for the population mean.
The formula for the confidence interval for a population mean is: x +/- z*standard error
First, let's find the values for each of the parts of the confidence interval.
x is the sample mean. In this case, x = ...
This solution provides the step-by-step calculations for the problem and interpretation of the results.