11. Correct. The answer is false
Given the confidence interval for 95 % which is
, also given the following parameters , ,
Using the 95% Level of confidence z = 1.96
95% confidence interval for m is
For 95% of the samples the true population mean () lies in the interval .
Or the average number of days off sick for employees in the population is likely to be between 7.71 and 8.69.