Question

Are low-fat diets or low-carb diets more effective for weight loss? A sample of 46 subjects...

Are low-fat diets or low-carb diets more effective for weight loss? A sample of 46 subjects went on a low-carbohydrate diet for six months. At the end of that time, the sample mean weight loss was 4.6 kilograms with a sample standard deviation of 6.28 kilograms. A second sample of 49 subjects went on a low-fat diet. Their sample mean weight loss was 2.3 kilograms with a standard deviation of 4.66 kilograms. Can you conclude that the mean weight loss differs between the two diets? Let μ1denote the mean weight lost on the low-carb diet and μ2 denote the mean weight lost on the low-fat diet. Use the =α0.1 level and the TI-84 Plus calculator.

1. state the appropriate null and alternate hypotheses.

Ho:?

H1: ?

is the hypothesis test a two-tailed, right-tailed or left-tailed?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Low-fat or low-carb? Are low-fat diets or low-carb diets more effective for weight loss? A sample...
Low-fat or low-carb? Are low-fat diets or low-carb diets more effective for weight loss? A sample of 77 subjects went on a low-carbohydrate diet for six months. At the end of that time, the sample mean weight loss was 4.7 kilograms with a sample standard deviation of 7.16 kilograms. A second sample of 79 subjects went on a low-fat diet. Their sample mean weight loss was 2.6 kilograms with a standard deviation of 5.90 kilograms. Can you conclude that the...
are low fat diets or low carb diets more effective for weight loss? a sample of...
are low fat diets or low carb diets more effective for weight loss? a sample of 70 subjects went on a low carbohydrate diet for 6 months. a 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 subjects went on a low fat diet. their sawith a sample mean weight loss was 18.0 with a standard deviation of 7.26. test the claim that...
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-carbohydrate diet for six months. 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 subjects 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...
Find the test statistic for the t test and state the conclusion.  Are low-fat diets or low-carb...
Find the test statistic for the t test and state the conclusion.  Are low-fat diets or low-carb diets more effective for weight loss? A sample of 78 subjects went on a low-carbohydrate diet for six months. At the end of that time, the sample mean weight loss was 15.0 pounds with a sample standard deviation of 7.77 pounds. A second sample of 74 subjects went on a low-fat diet. Their sample mean weight loss was 16.3 with a standard deviation of...
According to a study published in the New England Journal of Medicine, overweight people on low-carbohydrate...
According to a study published in the New England Journal of Medicine, overweight people on low-carbohydrate and Mediterranean diets lost more weight and got greater cardiovascular benefits than people on a conventional low-fat diet (The Boston Globe, July 17, 2008). A nutritionist wishes to verify these results and documents the weight loss (in pounds) of 30 dieters on the low-carbohydrate and Mediterranean diets and 30 dieters on the low-fat diet. Let Low-carb or Mediterranean and Low-fat diets represent populations 1...
In a recent medical study, 81 subjects were placed on a low-fat diet. After 12 months,...
In a recent medical study, 81 subjects were placed on a low-fat diet. After 12 months, their sample mean weight loss was 2.2 kilograms, with a sample standard deviation of 6.1 kilograms. Construct an appropriate test to conclude if the mean weight loss is greater than 0 at an α = 0.01 significance level.
Determine the test used for the following problem: Does the standard deviation in the weight loss...
Determine the test used for the following problem: Does the standard deviation in the weight loss of dieters who follow the low-carb diet differ from the standard deviation of the dieters who follow the low-fat diet?
A researcher studied how two diets compare in terms of weight loss after 6 months.      ...
A researcher studied how two diets compare in terms of weight loss after 6 months.       40 people used the first diet. Their sample mean was 44, and their sample standard deviation was 10.        60 people used the first diet. Their sample mean was 37, and their sample standard deviation was 15.       Give the 92% confidence interval for the true difference between the mean weight losses. Can we conclude that the two diets really differ in terms of...
Problem 9. A researcher studied how two diets compare in terms of weight loss after 6...
Problem 9. A researcher studied how two diets compare in terms of weight loss after 6 months. 40 people used the first diet. Their sample mean was 44, and their sample standard deviation was 10. 60 people used the first diet. Their sample mean was 37, and their sample standard deviation was 15. Give the 92% confidence interval for the true difference between the mean weight losses. Problem 10. Refer to the information in Problem 9. Can we conclude that...
6) A researcher studied how two diets compare in terms of weight loss after 6 months....
6) A researcher studied how two diets compare in terms of weight loss after 6 months. 40 people used the first diet. Their sample mean was 44, and their sample standard deviation was 10. 60 people used the first diet. Their sample mean was 37, and their sample standard deviation was 15. Give the 92% confidence interval for the true difference between the mean weight losses. 7) Refer to the information in the previous question.             Can we conclude that...