Question
In: Statistics and Probability
Are low-fat diets or low-carb diets more effective for weight loss? A sample of 70 subjects...
Are low-fat diets or low-carb diets more effective for weight loss? A sample of 70 subjects went on a low-carb At the end of that time, the sample mean weight loss was 10.5 pounds with a sample standard deviation of 7.09 pounds. A second sample of 76 went on a low-fat diet. Their sample mean weight loss was 18.0 with a standard deviation of 7.26. Can you conclude that their was no difference in the mean weight loss between the two diets? Use a = .05 level.
Be sure to show all 5 steps of the Hypothesis test.
Evaluate using a P-Value hypothesis test, Explain why you chose your decision.
Solutions
Expert Solution
TOPIC:Two-sample t-test for the population means.
Here,we assume that the population sd's are equal for both the populations.
orchestra answered 1 year agoRelated Solutions
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The technology output below shows results of a significance test
for testing
Upper H 0 : mu equals...
In a study, 272 moderately obese subjects were randomly assigned to one of three diets: low-fat,...
In a study, 272 moderately obese subjects were randomly
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Mediterranean, restricted-calorie; or low-carbohydrate,
nonrestricted-calorie. The prediction was that subjects on a
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two years, the mean weight loss was 5.5 kg for the 109 subjects in
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The technology output below shows results of a significance test
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Upper H 0 : mu equals...
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c) What are the risks each one poses?
d) Do they include an exercise component/
e) Which, if any, have the best chance of working? Why or why
not?
f) Submit your results and your response to this activity for
extra credit.
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