Use the image to answer the question.
The horizontal axis of a dot plot ranges from 1 to 8 in increments of 1. It is labeled difference.
Shawna has incorporated a new workout plan. She wants to lower the Body Mass Index (BMI) of her clients. Her clients’ average BMI is 28. After implementing the workout plan, the average BMI of her clients is 21. Shawna used software to simulate 25 trials of the mean differences in BMI. Find Shawna’s mean difference and determine whether the change is significant and if it’s a plausible result.
(1 point)
Responses
The difference between the means is 3, so it is not a plausible result.
The difference between the means is 3, so it is not a plausible result.
The difference between the means is 4, so it is a plausible result.
The difference between the means is 4, so it is a plausible result.
The difference between the means is 7, so it is not a plausible result.
The difference between the means is 7, so it is not a plausible result.
The difference between the means is 7, so it is a plausible result.
1 answer