union wishes to estimate the mean number of hours per month a union member is absent from work. The union decides to sample 351 of its members at random and monitor the working time of each of them for 1 month. At the end of the month, the total number of hours absent from work is recorded for each employee. If the mean and standard deviation of the sample are x=9.3 hours and s=3.8 hours, find a 90% confidence interval for the true mean number of hours a union member is absent per month. Round to the nearest thousandth.
Suppose a large labor union wishes to estimate the
9.3 ± .334
9.3 ± .018
9.3 ± .183
9.3 ± .171
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
