Question

In: Statistics and Probability

Suppose a new company is interested in promoting their new diet management program. The concept is...

  1. Suppose a new company is interested in promoting their new diet management program. The concept is similar to weight watchers and involves an overall reduction of daily calorie intake. Before making a more direct effort at promoting the success of their program, the company wants to get an idea of how effective their program is based on a SRS. Assume the following table represents results pre and post intervention of 5 individuals varying approximately to a normal distribution.

Participant

Daily calorie count

Prior to intervention

Daily calorie count

After intervention

1

2456

2107

2

2789

2014

3

2694

2006

4

2984

2479

5

2654

2109

A) What type of t-test would you use here?

B) Carry out an appropriate t test investigating the effectiveness of the new weight loss intervention at reducing overall calorie intake with alpha=.05. Be sure to include each of the four steps of hypothesis testing. Do not use excel or graphing calculator.

Solutions

Expert Solution

orchestra answered 1 year ago
Next > < Previous

Related Solutions

Suppose a new company is interested in promoting their new diet management program. The concept is...
Suppose a new company is interested in promoting their new diet management program. The concept is similar to weight watchers and involves an overall reduction of daily calorie intake. Before making a more direct effort at promoting the success of their program, the company wants to get an idea of how effective their program is based on a SRS. Assume the following table represents results pre and post intervention of 5 individuals varying approximately to a normal distribution. Participant Daily...
Week 10 Assessment Background Researchers are interested in determining if a new diet program is effective...
Week 10 Assessment Background Researchers are interested in determining if a new diet program is effective at helping people lose weight. In a pilot study, the researchers collect a random sample of 10 subjects and measure their weight before beginning the diet, then again after one month on the diet program. Data The following table summarizes the information collected: Patient Weight Before (in lb) Weight After (in lb) Difference (After minus Before) Subject #1 207 202 -5 Subject #2 179...
Question 2 Suppose a researcher is interested in the effectiveness in a new childhood exercise program...
Question 2 Suppose a researcher is interested in the effectiveness in a new childhood exercise program implemented in a SRS of schools across a particular county. In order to test the hypothesis that the new program decreases BMI (Kg/m2), the researcher takes a SRS of children from schools where the program is employed and a SRS from schools that do not employ the program and compares the results. Assume the following table represents the SRSs of students and their BMIs....
Investigators are interested in whether a new diet lowers total cholesterol in a group of individuals....
Investigators are interested in whether a new diet lowers total cholesterol in a group of individuals. They take a sample of 28 participants on the new diet. They know that the mean cholesterol level of the general population (µ) is 201 mg/dL, but they do not have information on the standard deviation of the population. The mean total cholesterol level in their sample of participants is 195 mg/dL and their sample has a standard deviation of 9 mg/dL. Your research...
Part II. Researchers are testing the effects of a new diet program on n = 10...
Part II. Researchers are testing the effects of a new diet program on n = 10 healthy participants. One topic that researchers are interested in are overall attitudes towards dieting. They are interested in knowing if the new diet program will change the participants attitudes towards dieting. Participants rated their attitude about diets before and after the diet program. Participant Before Diet After Diet 1 2 3 4 5 6 7 8 9 10           15 10 7 18 5...
Paired Samples t-test (30pts)Suppose you are interested in deciding if a particular diet is effective in...
Paired Samples t-test (30pts)Suppose you are interested in deciding if a particular diet is effective in changing people’s weight. You decide to run a “within subject” experiment. You select 6 people and weight each of them. Two weeks, you weight them again. For each person, you compute how much weight they lost over this period. This is what you find:Non-diet(subject 1-6): 0,8,3,2,-10,-1.You then put them on the diet and weigh them again after two weeks and compute how much they...
Paired Samples t-test (30pts)Suppose you are interested in deciding if a particular diet is effective in...
Paired Samples t-test (30pts)Suppose you are interested in deciding if a particular diet is effective in changing people’s weight. You decide to run a “within subject” experiment. You select 6 people and weight each of them. Two weeks, you weight them again. For each person, you compute how much weight they lost over this period. This is what you find:Non-diet(subject 1-6): 0,8,3,2,-10,-1.You then put them on the diet and weigh them again after two weeks and compute how much they...
A researcher is interested in studying the effect that the amount of fat in the diet...
A researcher is interested in studying the effect that the amount of fat in the diet and amount of exercise has on the mental acuity of middle-aged women. The researcher used three different treatment levels for the diet and two levels for the exercise. The results of the acuity test for the subjects in the different treatment levels are shown below. Diet Exercise <30% fat 30% - 60% fat >60% fat <60 minutes 4 3 2 4 1 2 2...
A researcher is interested in studying the effect that the amount of fat in the diet...
A researcher is interested in studying the effect that the amount of fat in the diet and amount of exercise has on the mental acuity of middle-aged women. The researcher used three different treatment levels for the diet and two levels for the exercise. The results of the acuity test for the subjects in the different treatment levels are shown below. Diet Exercise <30% fat 30% - 60% fat >60% fat <60 minutes 4 3 2 4 1 2 2...
Suppose a farmer is interested in developing a breeding program on his chicken farm. The farmer...
Suppose a farmer is interested in developing a breeding program on his chicken farm. The farmer would like to artificially select for egg weight, egg shape, shell color, and shell thickness. In a large population of his chickens, the farmer has measured these four continuous egg traits of interest and calculated their variances, shown in the table below. Variance Weight Shape Shell Color Shell Thickness Phenotypic 166 1043 157 176 Additice Genetic 4 140 83 22 Environmental 83 522 95.4...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT