Suppose a Researcher Is Testing a New Diet Drug

question 37

Essay

Suppose a researcher is testing a new diet drug. She would like to determine if the drug helps to significantly increase weight loss versus a placebo. She randomly assigns 40 participants to the treatment group and 35 to the placebo group. After 4 weeks on identical diets, the mean weights loss (in pounds) for each group is computed. Results of the study are as follows:
Treatment Group
Placebo Group
n = 40
n = 35
= 5.6
= 1.6
s = 2.85
s = 1.47
Create a 95% confidence interval for the difference of treatment effects.

---

Definitions:

Items

Items refer to individual things or units, especially as part of a list, collection, or inventory, covering a wide range of tangible and intangible objects.

Multiple Answers

Situations or questions that allow for more than one correct or suitable response.

Bibliography

A list of books and/or other materials consulted or cited in the preparation of a work.

Hypothesis

A proposed explanation or assumption for a phenomenon, made on the basis of limited evidence as a starting point for further investigation.