STA 2023 Lecture 1: Chapter 4
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StopSmoking is a product designed to help people quit smoking and no other products have to be more effective. StopSmoking provides significant advantages compared to all other products. For instance, StopSmoking is simpler to use. The product is also significantly less expensive than the other leading brands. The effectiveness of StopSmoking product has been tested in two independent experiments as shown in Table 1.
Quit Rates | ||
Experiment 1 |
StopSmoking 17% |
Brand A 13% |
Experiment 2 |
StopSmoking 18% |
Brand B 15% |
a) How do you interpret the results and information given above from the statistical context?
b) You would like to conduct another experiment on your latest product in comparison to the StopSmoking product. How would you determine the significant level of your statistical analysis? Describe on how would your decision affect the type I error and type II error.