1. Identifying the independent-measures designWhich of the following experiments uses independent samples?You want to compare the mean SAT score of students who take a new SAT preparation course to that of students who don't take an SATpreparation course. So you compare the mean SAT score of a randomly selected group of students who took a new SAT preparationcourse to the mean SAT score of a randomly selected group of students who didn't take an SAT preparation course.You want to compare the mean first-month weight gain of a random sample of premature babies to the known US average first-monthweight gain for all newborn babies.You want to compare the depression levels of teenage girls before and after attending a weeklong camp focused on improving self-image.So you compare the mean Hamilton depression scores of a randomly selected group of teenage girls before and after they attend aweeklong camp focused on improving self-image.

When data are taken from two different samples then sample is independent sample. When data is taken…

Answered: 1. Identifying the independent-measures…

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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A school psychologist was asked to assess a group of 17 students who failed their math exam. She screened for possible learning disabilities and wanted to check their global IQ scores. Each student was asked to complete a global IQ test. After conducting a correlation, she found that there was a strong positive correlation with r= 0.79 between IQ and math exam scores which was found to significant at p < 0.05. Based on the correlation, IQ was found to explain 61% of the variability in the student's math exam scores. After conducting the correlation, the teacher took another random group of 18 students who scored well in their math exam. She created two groups based on math exam scores (Group 1 high exam scores Vs Group 2 failed exam scores). The psychologist hypothesises that the students in the failed exam score group will have lower global IQs than students in the high exam score group who were used as a control group. A trial was conducted to assess the impact of IQ on math scores.…
What happens to measures of effect size such as r2 and Cohen's d as sample size increases? a. Doesn't influence the effect size. b. They tend to increase. c. They tend to decrease.
8.42 Sample size needed for an evaluation. You are planning an evaluation of a semester-long alcohol awareness campaign at your college. Previous evaluations indicate that about 20% of the students surveyed will respond Yes to the question "Did the campaign alter your behavior toward alcohol consumption?" How large a sample of students should you take if you want the margin of error for 95% confidence to be about 0.07?
In general, why does using a repeated-measures ANOVA increase statistical power compared to using a one-way between-groups ANOVA? Group of answer choices: a.MSbetween is lower b.MSerror is higher c.MSerror is lower d.MSbetween is higher
What is the primary purpose of conducting post hoc tests following an ANOVA? a. To determine the overall effect size of the ANOVA. ○ b. To confirm that there are no significant differences among the group means. c. To identify which specific pairs of group means are significantly different from each other. ○ d. To establish a new significance level for the ANOVA.
a) Work this problem manually (by hand) using the procedures and formulas for ANOVA to check if the Population Means for flying time before major maintenance is required are the same for the three types of aircraft. To help you, Sample Means and Sample Variances have been calculated below for you: Airbus Boeing737 Boeing 787 6.4 8.7 9.9 7.8 7.4 12.8 5.3 9.4 12.1 7.4 10.1 10.8 8.4 9.2 11.3 7.3 9.8 11.5 __________________________________________________________________ Sample Mean 7.1…
Group 1. Mean= 24.08 Group 2. Mean= 26.5 STD Dev= 4.42 STD Dev= 5.2 Sample Size=16 Sample Size=16 What is tcomputed =
As a Stock Analyst you compare the performance (measured as average increase in price from 20 may 2020 to 27 may 2020) of two sectors in the American stock exchange. You randomly choose 29 stocks from the finance sector and 29 stocks from the infrastructure and utility sector. This is an example of two dependent samples. INSTRUCTIONS TRUE or FALSE ?
Pls help ASAP. Pls show all work.
What is the value of the standard score for the sample proportion?
Identify the statistical procedures that are appropriate for the data. Childhood participation in sports, cultural groups, and youth groups appears to be related to improved self-esteem for adolescents (McGee, Williams, Howden-Chapman, Martin & Kawachi, 2006) in a representative study, a researcher compares scores on a standardized self-esteem questionnaire for a sample of n = 100 adolescents with a history of group participation and a separate sample of n = 100 who have no history of group participation.
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