What is the factor variable? Select an answer Diet Type Pounds Lost What is the response variable? Select an answer Pounds Lost Diet Type Test Statistic: P-Value: Decision Rule: Select an answer Accept the Null Fail to Reject the Null Reject the Null Did Something Significant Happen? Select an answer Significance Happened Nothing Significant Happened There Select an answer is is not to conclude
You are interested in testing if there is a difference in weight-loss between 3 popular diet types; low calorie, low fat and low carb. Participants are randomly assigned one of the three groups or a control group. The control group will be told that are participating in a weight-loss study, but will not be following any particular diet. This is to study the placebo effect, weight-loss from just participating in the study.
At the start of the study,each participant's weight is recorded in pounds. After 8 weeks they are weighed again, and the weight difference is recorded. A positive value represents a weight loss while a negative value represents a weight gain. Test at 5% significance.
| Low Calorie | Low Fat | Low Carb | Control |
|---|---|---|---|
| 3.3 | 0.2 | 5.1 | -0.3 |
| 8.3 | 0.5 | 4.9 | 2 |
| 5.7 | 1.3 | 3.4 | -0.8 |
| 7.1 | 3.4 | 3.3 | 0.5 |
| 7.8 | 2.5 | 3.3 | 2.5 |
What is the factor variable? Select an answer Diet Type Pounds Lost
What is the response variable? Select an answer Pounds Lost Diet Type
Test Statistic:
P-Value:
Decision Rule: Select an answer Accept the Null Fail to Reject the Null Reject the Null
Did Something Significant Happen? Select an answer Significance Happened Nothing Significant Happened
There Select an answer is is not to conclude
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