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A new weight-reducing technique, consisting of a liquid protein diet, is currently under- going tests by...

  1. A new weight-reducing technique, consisting of a liquid protein diet, is currently under- going tests by the Food and Drug Administration (FDA) before its introduction into themarket. A typical test performed by the FDA is the following: The weights of a random sample of 8 people are recorded before they are introduced to the liquid protein diet. The 8 individuals are then instructed to follow the liquid protein diet for 3 weeks. At the end of this period, their weights (in pounds) are again recorded. The results are listed in the table.

8 persons are selected 1 2 3 4 5 6 7 8
Before taking the diet: 134 204 167 276 187 168 175 176
After taking the diet: 130 206 155 258 175 166 170 159

(a) Test whether the diet is effective, use?=0.05.
(b) What is the P-value?

math   Statistics-And-Probability   
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Answer #2

8) To determine if the diet is effective at reducing weight, we test: The test statistic is t-d- test statistic is t syNn sdn

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