Researchers want to test a new anti-hunger weight loss pill. To do so, they had a total of 20 people rate their hunger before and after taking the pill. Based on the data collected, does the 10 pill have any significant impact on patients? The readings are available in this spreadsheet. 1. Define the null and alternative hypotheses. 2. Calculate the degrees of freedom. 3. Test the hypothesis using = 0.01, = 0.05, and = 0.1. What are your conclusions? 4. Construct 90%, 95%, and 99% confidence intervals (CIs) for their hunger level and comment on the results.

Person 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Hunger Level Before Taking the Pill 9 10 7 5 7 5 9 6 8 7 6 8 10 7 6 8 5 9 6 7

Hunger Level After Taking the Pill 7 6 5 4 4 6 7 5 5 7 4 5 8 5 6 7 6 4 5 6