The weights before and after 9 randomly selected participants followed a particu
ID: 3290459 • Letter: T
Question
The weights before and after 9 randomly selected participants followed a particular diet were recorded. The mean of the before weights was 170.4444, the mean of the weights following the diet was 160.5556 and the standard error of the differences was 3.1333. Calculate the appropriate test statistic for testing that the mean weight was lower following the diet and state your conclusion using a significance level of 0.01. t = 3.16: Reject the null hypothesis and conclude that the diet is effective for weight loss. t = 3.16: Fail to reject the null hypothesis: there is not enough information to conclude that the diet is effective for weight loss. t = 3.16: Accept the null hypothesis and conclude that there is no difference in the mean weight before and after the diet. t = 9.47: Fail to reject the null hypothesis: there is not enough information to conclude that the diet is effective for weight loss. t = 9.47: Reject the null hypothesis and conclude that the diet is effective for weight loss.Explanation / Answer
The correct option is A
Explanation
t=3.16; reject the null hypothesis and conclude that the diet is effective for weight loss
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