The following information was obtained from matched samples. The daily production rates for a sample of workers before and after a training program are shown below.
Worker Before After
1 20 22
2 25 23
3 27 27
4 23 20
5 22 25
6 20 19
7 17 18
What is the point estimate for the difference between the means of the two populations?
What is the null hypothesis to be tested?
What is the test statistic?
Develop a hypothesis test and illustrate your analysis to support your conclusion.