1. A dietary product implies in its advertising that using the product for one month results in an average weight loss of at least 3 pounds. Eight subjects use the product for one month, and the resulting weight loss data follow. Use hypothesis-testing procedures to answer the following questions.

Subject Initial Weight (lb) Final Weight (lb)

1 165 161

2 201 195

3 195 192

4 198 193

5 155 150

6 143 141

7 150 146

8 187 183

1. Do the data support the claim of the dietary products producer with the probability of a type I error set to 0.05?
2. Do the data support the claim of the dietary products producer with the probability of a type I error set to 0.01?
3. In an eort to improve sales, the producer is considering changing its claim from at least 3 pounds to at least 5 pounds. Repeat parts (a) and (b) to test this new claim.