1. to illustrate a production or marketing example: A company stats that is produces cookies with 50 chocolate chips per cookie. A sample of 36 cookies has an average of 49 chips with a standard deviation of 5 chips. Do we have a problem with our advertising claim of 50 chips per cookie (assume a confidence level of 95%)?
2. For a human resource example, stoges'slipper fitting service created an incentive plan for staff. To evaluate this dynamic plan, 4 staff members were selected at random, and their weekly incomes before and after the plan were recorded.
Salesperson before After
Curley $320 $340
larry 290 285
moe 421 475
Cinderella 510 510
was there a significant increase in the typical salespersons weekly income due to the innovative incentive plan? Use the .05 significant level.
Where do I start? We are comparing means for pairs of values. We desire to know the differences in the pairs.
The hypothesis testing to increase significance level is determined. The solution compares means for pairs of values.