R3.1-R3.18. What design? Analyze the design of each researchexample reported. Is it a sample survey, an observational study, oran experiment? If a sample, what are the population, the parameterof interest, and the sampling procedure? If an observational study,was it retrospective or prospective? If an experiment, describe thefactors, treatments, randomization, response variable, and any block-ing, matching, or blinding that may be present. In each, what kind ofconclusions can be reached?:lly contacted in the mid-bout smoking and bladdercancer. Data were collected from more than 280,000 menand 186,000 women from eight states who answered ques-tions about their health, smoking history, alcohol intake, diet,physical activity, and other lifestyle factors. When the studyended in 2006, about half the bladder cancer cases in adultsage 50 and older were traceable to smoking. (Journal of theAmerican Medical Association, August 17, 2011)I EI

The Research problem is: "People aged 50 to 71 were initially contacted in the mid-1990s to…

Answered: L R3.1-R3.18. What design? Analyze the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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What is the complete solution and answer to the given problem involving ANOVA?
Julius has conducted a very small study of the amount of sleep his dorm mates get each night. He believes that those who are on one of the school’s sports teams will get more sleep (measured in hours per night) than those who are not. Julius surveyed 12 people. Of these, 6 played on a sports team and 6 did not. The descriptive statistics from his survey are given below. PLAYS SPORTS (Sample 1) DOES NOT PLAY SPORTS (Sample 2) 8 6 9 6 8 5 7 7 8 7 7 6 What is the critical value for this test? what is the t-obtain value for this t-test? Based on your t-obtained value, what should you conclude about the null hypothesis for this test?
A sociologist is interested in the opinion of Minnesota teachers on the recent labor union law passed by Wisconsin lawmakers. a. What is the experimental unit? b.What is the population? c.What are the variables relevant to this study? Classify them as continuous, discrete, nominal, or ordinal. d. Explain how you would select a sample for this study. Explain pros and cons of your method.
What is the comple solution and answer for this problem involving ANOVA?
5.Stocks and Mutual Fund Ownership It has been found that 51.4% of U.S. households own stocks and mutual funds. A random sample of 300 heads of households indicated that 178 owned some type of stock. At what level of significance would you conclude that this was a significant difference? Use the P-value method. Assume the variable normally distributed. Use a graphing calculator. Find the P-value. At what level of significance is this a significant difference?
The Analysis of Variance. A research study compared beer consumed daily between 3 groups with 3 observations each. Group1 was UCB, Group 2 UCSD, and Group 3 UCI. Determine if there is a significant difference among the groups 5% level. Group1: UCB Group 2: UCSD Group 3: UCI The Results of this study are in the following table: Group1 Group2 Group3 Sample 3, 4, 5 3.2, 4, 4.2 3, 4, 3.3 Mean 4.0 3.7 3.4 S^2 4.4 5.2 6.1 null and alternative hypotheses are Null hypothesis Ho : There is a significant difference among the treatment group means Alternative Hypothesis Ha : At least one group mean is different from other group means the average mean due to treatments are…
Interaction a. What is an interaction between two factors? b. In general, when using two-way analysis of variance, if we find that there is an interaction effect, how does that affect the procedure? c. Shown below is an interaction graph constructed from the data in Exercise 1. What does the graph suggest?
team 1 9.11 9.22 9.5 9.62 9.68 9.59 team 2 9.7 9.8 9.8 9.81 9.85 team 3 9.88 9.89 9.9 9.9 9.9 10.01 9.85 team 4 9.91 9.91 9.94 9.95 team 5 9.96 9.96 9.96 9.97 9.98 Select the most diverse data. Is it statistically different at the 90% confidence level? Use the appropriate t-test
R3.1-R3.18. What design? Analyze the design of each research example reported. Is it a sample survey, an observational study, or an experiment? If a sample, what are the population, the parameter of interest, and the sampling procedure? If an observational study, was it retrospective or prospective? If an experiment, describe the factors, treatments, randomization, response variable, and any block- ing, matching, or blinding that may be present. In each, what kind of conclusions can be reached? R3.1. Researchers identified 242 children in the Cleveland area who had been born prematurely (at about 29 weeks). They examined these children at age 8 and again at age 20, com- paring them to another group of 233 children not born pre- maturely. Their report, published in the New England Journal of Medicine, said the "preemies" engaged in signifi- cantly less risky behavior than the others. Differences showed up in the use of alcohol and marijuana, conviction of crimes, and teenage pregnancy.
I am asking for help on the second question: "Identify whether each of the following..." and the first two bullet point that follow it starting with "Researchers are studying..." and ending with "A study tracks the long-term..."

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