The e-mail usage for two different plants of a large company wascompared at leve

The e-mail usage for two different plants of a large company wascompared at level of significance 0.05. A sample of 100 employeeswas selected at each plant. The mean number of e-mail messages sentper employee for one plant was 16 per week and the standarddeviation was 4. For the other plant the mean was 15 and thestandard deviation was 3. For the test of equal population meansversus unequal population means the absolute value for thecomputed test statistic the critical values and the p-valuerespectively are:a. 2 1.96 0.0455b. 3 2.33 0.0027c. 3 1.96 0.0455d. 2 1.65 0.0455