A psychologist wishes to determine which of four diet plans works best. The psychologist randomly assigns 32 overweight clients to one of four diet plans: Life on Herbs (LOH), E-mail-A-Meal (EAM), Weight-Lookers (WLK), and Low-Carbs (LOC). The numbers represent weight loss in pounds for 3 months for each client.
-Based on Tukey's HSD results, all but one of the following is true.Which is not a true statement?
A)The Low-Carbs diet produced the most weight loss.
B)There was no significant difference in weight loss between the E-mail-A-Meal and the Life on Herbs diets.
C)The Weight-Lookers diet produced the least weight loss.
D)The Life on Herbs diet produced a greater weight loss than the E-mail-A-Meal diet.

Question

A psychologist wishes to determine which of four diet plans works best. The psychologist randomly assigns 32 overweight clients to one of four diet plans: Life on Herbs (LOH), E-mail-A-Meal (EAM), Weight-Lookers (WLK), and Low-Carbs (LOC). The numbers represent weight loss in pounds for 3 months for each client.
-Based on Tukey's HSD results, all but one of the following is true.Which is not a true statement?
A)The Low-Carbs diet produced the most weight loss. 
B)There was no significant difference in weight loss between the E-mail-A-Meal and the Life on Herbs diets. 
C)The Weight-Lookers diet produced the least weight loss. 
D)The Life on Herbs diet produced a greater weight loss than the E-mail-A-Meal diet.

Quizplus · Accepted Answer

Tukey's HSD (Honestly Significant Difference) test is used to compare means between groups to find out which ones differ from the rest. The statement that the Life on Herbs diet produced a greater weight loss than the E-mail-A-Meal diet is not necessarily true based on Tukey's HSD results, especially if the test found no significant difference between these two diets, as suggested by another statement being considered true.

A Psychologist Wishes to Determine Which of Four Diet Plans