Two weight loss programs were compared to evaluate whether low fat or low carb diets work...
Two weight loss programs were compared to evaluate whether low fat or low carb diets work better to reduce weight. 12 women were randomly assigned to either the low fat program or the low carb program. After three months, the women’s weight loss in pounds was measured. The results for both groups of women is presented below:
Low fat: 10 12 15 17 20
Low carb: 12 9 10 4 6 12 8
Conduct a two tailed test at alpha = 0.05
Write the null hypothesis.
Write the alternative hypothesis.
What is the sum of the squared deviation scores (SS) for difference (D)?
What is S2 for the difference scores?
What is the value of n?
Calculate the standard deviation of D; i.e. (S)
Calculate the standard error.
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Two weight loss programs were compared to evaluate whether low
fat or low carb diets work...
Required information Are low-fat diets or low-carb diets more effective for weight loss? A sample of...
Required information 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 4.8 kg with a sample standard deviation of 72 kg. A second sample of 79 subjects went on a low-fat diet. Their sample mean weight loss was 2.6 kg with a standard deviation of 6.0 kg. value and state a Can you...
Which diet is the best in terms of weight loss? Low carb or low fat diets...
Which diet is the best in terms of weight loss? Low carb or low fat diets ? Discuss the health implications of each.
low carb n=77 average weight loss 4.7kg standard deviation7.2kg low fat n=79 average weight loss 2.6kg...
low carb n=77 average weight loss 4.7kg standard deviation7.2kg low fat n=79 average weight loss 2.6kg standard deviation5.9kg For this problem, the degrees of freedom is 147, which gives the critical t-value for a 95% confidence interval to be TC = 1.992. Use this value and the values in the table to calculate the margin of error for the difference in population means: E=Tc s1 2/n1+s22/ n2. Calculate the difference in sample means, x1-x2, using the low-carbohydrate group as group...
Section 9.2 Questions #7-8 9.2: Comparing Popular Diets Because about two-thirds of Americans are considered overweight,...
Section 9.2 Questions #7-8
9.2: Comparing Popular Diets Because about two-thirds of Americans are considered overweight, weight loss is big business. There are many different types of diets, but do some work better than others? Is low fat better than low carb or is some combination best? Researchers conducted a study involving four popular diets: Atkins (very low carb), Zone (40:30:30 ratio of carbs, protein, fat), LEARN (high carbohydrate, low fat), and Ornish (low fat). They randomly assigned women aged...
2. Researchers were interested in evaluating the effects of two low-fat diets with and without resistance...
2. Researchers were interested in evaluating the effects of two low-fat diets with and without resistance exercise training (RT) on weight loss. The diets differed in the carbohydrate-to-protein ratio. A total 80 individuals with type 2 diabetes participated in the study. There were 40 men and 40 women and each group was randomly assigned to an isocaloric diet of either standard or high protein, with or without supervised resistance training (3 days/week) for 16 weeks. Body weight was measured before...
In a test of weight loss programs, 120 subjects were divided such that 40 subjects followed...
In a test of weight loss programs, 120 subjects were divided such that 40 subjects followed each of 3 diets. Each was weighed a year after starting the diet and the results are in the ANOVA table below. Use a 0.05 significance level to test the claim that the mean weight loss is the same for the different diets. Source of Variation SS df MS F P-value Fcrit Between Groups 91.990 2 45.99487 1.3743 0.257070 3.073763 Within Groups 3915.738 117...
Score: vor 12.1.5 Question Help In a test of weight loss programs, 111 subjects were divided...
Score: vor 12.1.5 Question Help In a test of weight loss programs, 111 subjects were divided such that 37 subjects followed ench of 3 diets. Each was weighed a year after starting the diet and the results are in the ANOVA table below. Use a 0.025 significance level to test the claim that the mean weight loss is the same for the different diets. Source of Variation SS df MS F P-value Forff Between Groups 202.462 2 101 23117 3.2046...
Twenty students were randomly assigned to one of four exercise programs (5 students in each program), and the mean weight losses for the four programs were compared using one-way analysis of variance....
Twenty students were randomly assigned to one of four exercise programs (5 students in each program), and the mean weight losses for the four programs were compared using one-way analysis of variance.The mean square error (MS Error) was 40.The mean weight loss for the first program was 1 x= 5 pounds. 39.What is the standard error of 1 x, the sample mean weight loss in the first program? A.0.32 B.1.41 C.2.83 D.None of the above KEY: C How we find...
Researchers were interested in comparing the long-term psychological effects of being on a high-carbohydrate, low-fat (LF) diet versus a high-fat, low-carbohydrate (LC) diet. A total of 106 overweight...
Researchers were interested in comparing the long-term psychological effects of being on a high-carbohydrate, low-fat (LF) diet versus a high-fat, low-carbohydrate (LC) diet. A total of 106 overweight and obese participants were randomly assigned to one of these two energy-restricted diets. At 52 weeks, 32 LC dieters and 33 LF dieters remained. Mood was assessed using a total mood disturbance score (TMDS), where a lower score is associated with a less negative mood. A summary of these results follows: Group...
please show all work Question 9 (13 points) In a test of weight loss programs, 40...
please show all work
Question 9 (13 points) In a test of weight loss programs, 40 adults used the Atkins weight loss program. After 12 months, their mean weight loss was found to be 2.1 lb, with a standard deviation of 4.8 lb. Answer the questions to construct and interpret a 90% confidence interval for the true mean weight loss for all adults who used the Atkins weight loss program. a. (1 pt.) What parameter are you estimating? (p or...
Required information 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 4.8 kg with a sample standard deviation of 72 kg. A second sample of 79 subjects went on a low-fat diet. Their sample mean weight loss was 2.6 kg with a standard deviation of 6.0 kg. value and state a Can you...
Section 9.2 Questions #7-8
9.2: Comparing Popular Diets Because about two-thirds of Americans are considered overweight, weight loss is big business. There are many different types of diets, but do some work better than others? Is low fat better than low carb or is some combination best? Researchers conducted a study involving four popular diets: Atkins (very low carb), Zone (40:30:30 ratio of carbs, protein, fat), LEARN (high carbohydrate, low fat), and Ornish (low fat). They randomly assigned women aged...
2. Researchers were interested in evaluating the effects of two low-fat diets with and without resistance exercise training (RT) on weight loss. The diets differed in the carbohydrate-to-protein ratio. A total 80 individuals with type 2 diabetes participated in the study. There were 40 men and 40 women and each group was randomly assigned to an isocaloric diet of either standard or high protein, with or without supervised resistance training (3 days/week) for 16 weeks. Body weight was measured before...
In a test of weight loss programs, 120 subjects were divided such that 40 subjects followed each of 3 diets. Each was weighed a year after starting the diet and the results are in the ANOVA table below. Use a 0.05 significance level to test the claim that the mean weight loss is the same for the different diets. Source of Variation SS df MS F P-value Fcrit Between Groups 91.990 2 45.99487 1.3743 0.257070 3.073763 Within Groups 3915.738 117...
Score: vor 12.1.5 Question Help In a test of weight loss programs, 111 subjects were divided such that 37 subjects followed ench of 3 diets. Each was weighed a year after starting the diet and the results are in the ANOVA table below. Use a 0.025 significance level to test the claim that the mean weight loss is the same for the different diets. Source of Variation SS df MS F P-value Forff Between Groups 202.462 2 101 23117 3.2046...
please show all work
Question 9 (13 points) In a test of weight loss programs, 40 adults used the Atkins weight loss program. After 12 months, their mean weight loss was found to be 2.1 lb, with a standard deviation of 4.8 lb. Answer the questions to construct and interpret a 90% confidence interval for the true mean weight loss for all adults who used the Atkins weight loss program. a. (1 pt.) What parameter are you estimating? (p or...
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