The computational aspects of the ANOVA for the random effects model are the same as in the fixed effects case, but the conclusionsare different because they apply to the entire population of treatments.O TrueO False

Solution: The given statement is “The computational aspects of the ANOVA for the random effects…

Answered: The computational aspects of the ANOVA…

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter9: Sequences, Probability And Counting Theory

Section9.7: Probability

Problem 1SE: What term is used to express the likelihood of an event occurring? Are there restrictions on its...

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Using the latest in medical technology, an orthopedic doctor has developed a new surgical procedure that he believes is an improvement over the standard procedure. He wants to study whether the mean recovery time of patients who have the new procedure is less than the mean recovery time of patients who have the standard procedure. The doctor studies a random sample of 11 patients who have the new procedure and a random sample of 9 patients who have the standard procedure. (These samples are chosen independently.) The doctor records each patient's recovery time (in days). The patients who had the new procedure have a sample mean recovery time of 346.6 with a sample variance of 3688.5 . The patients who had the standard procedure have a sample mean recovery time of 380.4 with a sample variance of 427.8 . Assume that the two populations of recovery times are approximately normally distributed. Can the doctor conclude, at the 0.10 level of significance, that the population mean of the…
Using the latest in medical technology, an orthopedic doctor has developed a new surgical procedure that he believes is an improvement over the standard procedure. He wants to study whether the mean recovery time of patients who have the new procedure is less than the mean recovery time of patients who have the standard procedure. The doctor studies a random sample of 11 patients who have the new procedure and a random sample of 9 patients who have the standard procedure. (These samples are chosen independently.) The doctor records each patient's recovery time (in days). The patients who had the new procedure have a sample mean recovery time of 367.3 with a sample variance of 2851.8. The patients who had the standard procedure have a sample mean recovery time of 420.9 with a sample variance of 98.1. Assume that the two populations of recovery times are approximately normally distributed. Can the doctor conclude, at the 0.01 level of significance, that the population mean of the…
Explain the difference between the one-way fixed effects model and the one-way random effects model.
If the assumption of constant variance is violated, you can transform the response data True or false
Here is the scenario for your Between Subjects Independent One Way ANOVA: Dr. Xena is interested in determine which type of therapy best helps persons with bipolar depression. She gathers a random and representative sample of men and women ages 18-95 years of age who have a diagnosis of Bipolar Depression who are taking Lithium for at least 6 months. She randomly assigns participants to conditions and measures well being scores after 4 months of therapy. Well being scores range from 0-100, with 100 being high well-being (feel good and experiencing no mood swings). Here is the data: Cognitive Therapy EMDR Therapy Psychoanalytical Therapy 15 72 28 78 91…
Suppose a new policy was implemented in the state of Ohio in 2007 that greatly reduced the cost of filing for a divorce, both in terms of monetary fees and paperwork. In the neighboring state of Pennsylvania, suppose the cost of filing for divorce has not changed from before 2007 to after 2007. You have collected two cross sections of divorce data from the years 2005 and 2009, for a random set of counties in both states. Suppose you propos the following regression model, with no additional factors controlled for, to study how the new policy has influenced the number of divorces in the treatment group (the state of Ohio) versus the control group (the state of Pennsylvania): div = Bo+ 80 yr09+ B₁ OH + 8, OH-yr09+ u where div number of divorces per 100 residents in the county yr09 1 when the year is 2009, and =0 if the year is 2005 OH-1 if the county is in Ohio, and -0 if the county is in Pennsylvania i error term The effect of the new policy in Ohio on the divorce rate is measured by $1…
The data from an independent-measures research study produce a sample mean difference of 4 points, and each sample has a variance of 10. If there are n = 20 scores in each sample, then what is the estimated standard error of the difference between means?
A researcher wanted to examine the effect of a new math study skills program on second graders. Twenty-five students took the new study skills program for six weeks and then took a standardized math exam, which is known to have a population mean score of u = 80 (this is the mean for the entire population of students who have not taken the new math study skills program). The mean and variance on the exam for the 25 students (who took the new study skills program) are reported below. The mean of the n = 25 students was M = 85 with a sample variance (s²) of 100. Test to see whether the students who took the new study skills program have significantly different test scores than the national average of μ = 80. Use a = .05, 2-tailed. Step 1. State the null and alternative hypotheses below. What type of test should be run on the data? (circle one below) a. one sample z b. one sample t c. independent samples t d. related samples t Step 2. Locate the critical region and report the critical…
A type 2 error occurs when a treatment actually does have an effect on the scores but the effect was not large enough to reject the bill hypothesis. True or false?
When an interaction term is statistically significant, you must be cautious in interpreting the main effects. True or False?
A company sells its product line in traditional brick and mortar stores as well an online store site. Historically, 42% of all company sales took place through its online store site. Due to recent budget cuts, the company has had to cut back on advertising expenditures that promote the online store site. You would like to determine if there has been a DECREASE in the proportion of sales coming from the online store site since the time you reduced your advertising expenditures. Therefore, the null and alternative hypotheses are: H0: proportion of online sales ≥ 42% (no decrease in online sales proportion) H1: proportion of online sales < 42% (decrease in online sales proportion) You take a sample of 84 days and record what proportion of sales were online and what proportion were offline (in a traditional brick and mortar store). You utilize Minitab to create the…

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The computational aspects of the ANOVA for the random effects model are the same as in the fixed effects case, but the conclusions are different because they apply to the entire population of treatments. O True O False