A weight loss company claims that the median weight loss for people who follow their program is at least 15 pounds. Weight losses for a random sample of 20 people in the program were recorded, and the results were as follows. Can you conclude that the claim is false? Use the α = 0.05 level of significance.

a. State the appropriate null and alternate hypotheses.

b. Compute the value of the test statistic.

c. Find the critical value.

d. State a conclusion.

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