A health researcher is interested in comparing 3 methods of weight loss: low calorie diet, low fat diet and high exercise regimen. He selected 15 moderately overweight subjects and randomly assigned 5 to each weight-loss program. The following weight reductions (in Ibs) were observed after a one-month period. Test the hypothesis that the extent of weight reduction does not differ by type of weight-loss program. Low Fat : 7 4 6 Low Calorie : 7 8 8 9 High Exercise Regimen : 7 9 8 8

A health researcher is interested in comparing 3 methods of weight loss: low calorie diet, low fat diet and high exercise regimen. He selected 15 moderately overweight subjects and randomly assigned 5 to each weight-loss program. The following weight reductions (in Ibs) were observed after a one-month period. Test the hypothesis that the extent of weight reduction does not differ by type of weight-loss program. Low Fat : 7 4 6 Low Calorie : 7 8 8 9 High Exercise Regimen : 7 9 8 8

Name: Answer the given problem. Use the steps in hypothesis testing in pres
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: Answer the given problem. Use the steps in hypothesis testing in presenting the results.A health researcher is interested in comparing 3 methods of weight loss: low calorie diet, low fat diet and high exercise regimen. Heselected 15 moderately overw

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: In an article Shelf-Space Strategy in Retailing, published in the Proceedings: Southern Marketing…

A: In order to determine whether there is significant difference in the average daily sales of…

Q: A researcher conducts an independent-measures study examining the effectiveness of a group exercise…

A: Given : The data are as follows: Control Exercise…

Q: Obtain the stratum-specific odds ratios for the 2 groups and the odds ratio for the aggregate data.…

A: Odd ratio of 2 groups and aggregate are obtained

Q: Researchers are interested in whether drinking coffee can improve exam performance for college…

A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks a) Here our…

Q: Study 1: A study of 300 high school students was done. Half of them were instructed to drink soda…

A: Given data, A study of 300 high school students was done. Half of them were instructed to drink soda…

Q: In the Glucose Group ONLY: Was there a statistical difference between blood glucose values at 30…

A: Null Hypothesis: H0: There is no difference in the mean blood glucose values at 30 minutes compared…

Q: e. What conditions are required for the test results to be valid? Select all that apply. A. The…

A: Sample mean, x¯=65 Sample sd, s=35.3

Q: A U.S. Food Survey showed that Americans routinely eat beef in their diet. Suppose that in a study…

A: Given information Illinois Texas µ µ1 µ2 n 49 64 x̅ 54.1 lb 60.4…

Q: Solid fats are more likely to raise blood cholesterol levels than liquid fats. Suppose a…

A: Given: n1 = 6 n2 = 6 Formula Used: Test-statistic t = X1-X2sp1n1+1n2 sp = (n1-1)s12+(n2-1)s22n1+n2-2

Q: To check pain-relieving medications for potential side effects on blood pressure, it is decided to…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: The following data represent the means for each treatment condition in a two-factor experiment. What…

Q: lowering cholesterol: diet and meds. The researcher wants to see if the patients who receive the…

Q: Treatment for depression: Researchers conducted a study of 18 patients whose depression had not…

A: Given that: Sample size, n=18

Q: The medical researcher is comparing two treatments for lowering cholesterol: diet and meds. The…

A: Given data: Diet Meds Total Yes 419 446 865 No 187 265 452 Total 606 711 1317…

Q: A recent study randomly selected women from various countries around the world and collected…

Q: Big sagebrush is often planted in range restoration projects. An experiment is performed to…

A: 1) The false statement is "Option b. b. Experiment Design: 2 factorial design in CRD (completely…

Q: A researcher conducts an independent-measures study examining how the brain chemical serotonin is…

A: A. Null and alternate hypotheses: The investigator is specifically interested to test whether the…

Q: An exercise science major is planning to investigate the hypothesis that diet plus exercise is more…

Q: n automobile manufacturer wants to compare the lifetime of two brands of tire. She obtains a sample…

A: Solution: Consider μ1 be the population mean lifetime of brand A and μ2 be the population mean…

Q: The medical researcher is comparing two treatments for lowering cholesterol: diet and meds. The…

A: It is appropriate to compare proportion of of individuals on diet and meds who had lost weight. So…

Q: Using the same anti-venom study, answer the following questions. A study was done on children (6…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Does the new training program appear to be more effective than the older training program in…

A: x1 = 10 s1 = 8 n1 = 50 x2 = 18 s2 =12 n2 = 50

Q: Study 1: A study of 300 high school students was done. Half of them were instructed to drink soda…

A: Given data A study of 300 high school students was done. Half of them were instructed to drink soda…

Q: Solid fats are more likely to raise blood cholesterol levels than liquid fats. Suppose a…

Q: A substance abuse counselor wants to demonstrate the effect of situational stress on alcohol…

A: Introduction: Denote μ1, μ2 as the true mean measures of alcohol rating, as given by the group of…

Q: Suppose you were presented with the results of a study comparing two different training methods for…

A: n1: no. of athlete in Group A=16 n2: no. of athlete in Group B=16 First team had 10% more wins than…

Q: A. Headache Pain : There are many over-the-counter pain relievers. By the end of the semester, you…

A: Given: Placebo Drug A Drug B Drug C 70 30 10 10 30 60 40 20 50 40 10 10 60 30 10 10 40…

Q: re looking for the most effective pain relie lacebo to see which work best. You use on eadache to go…

A: Independent variable: Type of Drug and placebo Dependent variable: Amount of time take pain relief…

Topic Video

Question

Answer the given problem. Use the steps in hypothesis testing in presenting the results.
A health researcher is interested in comparing 3 methods of weight loss: low calorie diet, low fat diet and high exercise regimen. He
selected 15 moderately overweight subjects and randomly assigned 5 to each weight-loss program. The following weight reductions (in Ibs)
were observed after a one-month period. Test the hypothesis that the extent of weight reduction does not differ by type of weight-loss
program.
Low Fat
4
6
Low Calorie
:7 8
8
9
5
High Exercise Regimen : 7
8

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Means$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions

Solid fats are more likely to raise blood cholesterol levels than liquid fats. Suppose a nutritionist analyzed the percentage of saturated fat for a sample of 6 brands of stick margarine (solid fat) and for a sample of 6 brands of liquid margarine and obtained the following results: Stick:[25.5,26.7,26.5,26.6,26.3,26.4] Liquid:[16.5,17.1,17.5,17.3,17.2,16.7] We want to determine if there a significant difference in the average amount of saturated fat in solid and liquid fats. What is the test statistic? a) z = 39.604 b) t = 25.263 c) t = 39.604 d) z = 39.104 e) t = 39.104
An experiment to determine the most effective way to teach safety principles applied four different teaching methods. Some employees were given programmed instruction booklets and worked through the course at their own pace. Other employees attended lectures. A third group watched a television presentation, and a fourth group was divided into small discussion groups. A high of 10 was possible. A sample of five tests was selected from each group. The test grade results were: Sample Number Programmed Instruction Lecture TV Group Discussion 1 6 8 7 8 2 7 5 9 5 3 6 8 6 6 4 5 6 8 6 5 6 8 5 5 At the 0.01 level, what is the critical value? Multiple Choice 1.00 1.96 3.24 5.29
Acne is a common skin disease that affects most adolescents and can continue into adulthood. A study compared the effectiveness of three acne treatments and a placebo, all in gel form, applied twice daily for 12 weeks. The study's 517 teenage volunteers were randomly assigned to one of the four treatments. Success was assessed as clear or almost clear skin at the end of the 12 week period. The results of the study can be seen in the table below. Using the appropriate statistical test, determine if there is significant evidence that the four treatments perform differently. If so, how do they compare.
A group of 600 patients who suffer from seasonal allergies is asked to participate in a study to determine the effectiveness of a new medication. The patients are divided randomly into two groups, one was given the actual medication and one received a placebo pill. After 2 months of treatment, 64% of the patients who took the medication had fewer allergy symptoms, while only 36% of those who took the placebo had fewer allergy symptoms. a. What is the treatment variable? b. What is the response (or outcome) variable? c. Was this an observational study or a controlled experiment? Explain how you know. d. Assuming the rest of the study was well-designed, use your answers to discuss whether it would be reasonable to conclude that taking the new medication caused fewer allergy symptoms.
Johnson and Leone describe an experiment to investigate the warping of copper plates. The two factors studied were temperature and the copper content of the plates. The response variable was a measure of the amount of warping. The data are as follows: Temperature (°C) 50 75 100 Copper Content (%) 40 60 80 100 17 20 12 9 16 12 21 17 21 16 24 21 18 13 18 21 ZZFEHERRE 23 22 27 17 27 31 30 23 29 31 12 25 23 23 28 22 125 Source: Applied Statistics and Probability for Engineers, 6th Edition, Douglas, C. Montgomery & George, C. Runger. 1. Draw and interpret the interaction plot. ii. Is there any significant interaction between the factors? Use a = 0.05. ii. Can your interpretation in (i) be validated in (ii)? Twelve plants are randomly
A science project involves testing the effects of different types of music on plant growth. A sample of 24 newly sprouted bean plants is obtained. The plants are randomly assigned to each experimental condition (6 per group). The experimental conditions are: rock music, heavy metal, country, and classical. The dependent variable is the height of each plant after 2 weeks. The ANOVA results are summarized as follows: MSB = 10 and SSW =40. Construct a summary table for this study
In a certain study, the effect on oat yield was compared for the Pallinup, Overberg and Magnifico varieties of oats and four different concentrations of manure (0, 0.2, 0.4 and 0.6 tonnes per acre). Identify the experimental units, response variable, factor(s), levels of each factor and treatments.
The medical researcher is comparing two treatments for lowering cholesterol: diet and meds. The researcher wants to see if the patients who receive the recommendation to change their diet have less success lowering cholesterol compared to a prescription of meds. A random sample of some patients who received the recommendation to change their diet and others who were prescribed meds was taken. The results of how many did or did not lower their cholesterol are shown below: Data on Diet vs. Meds for Weight Los Diet Meds Yes 416 483 No 266 248 What can be concluded at the a = 0.05 level of significance? %3D For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer > Select an answer Select an answer O (please enter a decimal) Hj: Select an answer Select an answer Select an answer O (Please enter a decimal) b. The test statistic ? O (please show your answer to 3 decimal places.) c. The p-value = (Please show your answer to %3D 4…
A pharmaceutical company is testing the effectiveness of its vaccine across two different age brackets. They take a sample and split the participants up into two separate groups. Group A consists of 44 people who are between ages 13 and 18. Group B consists of 58 people between ages 19 and 26. After being administered the vaccine, it was found that 37 people from group A were immune to the virus and 42 people from group B were immune. What proportion of people from Group A were immune? What proportion of people from Group B were immune? What proportion of people in this study were immune?
A researcher finds 1000 mildly overweight women who exercise regularly, have not had a heart attack, and are willing to participate in the study. She randomly assigns 500 of the women to take an appetite suppressant. The other 500 women are given a placebo. Both groups are followed for five years, and the amount of weight lost after this time is recorded. The response variable in the experiment is: a. the use of a control group taking a placebo. b. the length of the study. c. the weight lost by women in the study. d. the treatment taken by women in the study—appetite suppressant or placebo.
his question refers to excavations at a national monument. One question the archaeologists asked was: Is raw material used by prehistoric Indians for stone tool manufacture independent of the archaeological excavation site? Two different excavation sites gave the information in the following table. Use a chi-square test with 5% level of significance to test the claim that raw material used for construction of stone tools and excavation site are independent. Excavation Site Material Site A Site B Row Total Basalt 756 559 1315 Obsidian 92 103 195 Pedernal chert 514 521 1035 Other 88 91 179 Column Total 1450 1274 2724 (a) What is the level of significance? (b) Find the value of the chi-square statistic for the sample. (Round the expected frequencies to at least three decimal places. Round the test statistic to three decimal places.)