A new weight loss medication claims that the average person taking their medication will lose at least 10 pounds in 60 days. We created an experiment where we used 20 people who took the medication and weighed them up front, then weighed them again after 60 days. The net loss is computed by taking initial weight - weight after 60 days. The following represent the individuals weight loss:

Person Net loss

1 -2

2 2

3 18

4 7

5 13

6 -1

7 18

8 5

9 14

10 0

11 4

12 4

13 12

14 3

15 13

16 -1

17 14

18 14

19 11

20 -1

Answer the following questions:

1. What does a negative value represent in my dataset?

1. Which graphical summaries would be the best to represent this data?

1. When doing inferential analysis, which distribution should I use? What assumptions do I need to make in order to use this?

1. Write the appropriate hypotheses if we wanted to test the manufacturers claim

1. Run the hypothesis test at the = 0.05 level. Write a sentence to explain your result

1. Think of some possible confounding variables that may impact our results