A dietician wants to see if there is any difference in the effectiveness of three diets. Eighteen people, comprising a sample, were randomly assigned to the three diets. Below you are given the total amount of weight lost in a month by each person. 
a.State the null and alternative hypotheses.
b.Calculate the test statistic.
c.What would you advise the dietician about the effectiveness of the three diets? Use a .05 level of significance.
Definitions:
Lateral Branches
Branches that grow out from the sides of a stem or tree, extending horizontally rather than vertically.
Thigh
The part of the lower limb between the hip and the knee.
Intercostal Veins
Veins located between the ribs that drain blood from the chest wall and muscles back to the heart.
Intercostal Muscles
Muscles located between the ribs that assist with the breathing process by expanding and contracting the chest cavity.
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