Twenty people participate in a weight-loss program for two months. Their weights
ID: 3149667 • Letter: T
Question
Twenty people participate in a weight-loss program for two months. Their weights after the two months are compared to their starting weights. What kind of mean difference might we expect if the null hypothesis is true for a 2-tailed paired-samples t test?
Question 1 options:
a loss of pounds, on average, showing the effectiveness of the program
a negative mean difference, indicating significant weight loss
no change in weight or weight gain, indicating that the program does not work
weight loss, indicating that the program does not work
a loss of pounds, on average, showing the effectiveness of the program
a negative mean difference, indicating significant weight loss
no change in weight or weight gain, indicating that the program does not work
weight loss, indicating that the program does not work
Explanation / Answer
here we use paired t test
a loss of pounds, on average, showing the effectiveness of the program
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