The water diet requires one to drink two cups of water every half hour from when

Question

The water diet requires one to drink two cups of water every half hour from when one gets up until one goes to bed, but otherwise allows one to eat whatever one likes. Five adult volunteers agree to test the diet. They are weighed prior to beginning the diet and after six weeks on the diet. The weights (in pounds) are 1 2 3 4 5 Weight before the diet 180 130 240 150 202 Weight after six weeks on the diet 170 130 215 149 190 For the population of all adults, assume that the weight loss after six weeks on the diet (weight before the diet minus weight after six weeks on the diet) is Normally distributed with unknown mean . We do a test of significance to determine if the sample provides sufficient evidence that the water diet causes weight loss. (Ha : average weight loss is greater than 0.)

What is the t-test statistic in the test?

a. 0.051

b. 2.373

c. 1.898

d. 2.122

e. 0.425

Explanation / Answer

answer:

(d) 2.122

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