Professor Arig randomly assigned 105 male students who had beenreferred to the Guidance Center, after a violation of university rules.Students were assigned to undergo (1) Counseling, (2) Gabay, a developedintervention in which the students go through series of activities and thematerial used is related to the students' own experiences. Based oninferential statistics, the researchers concluded that those in theCounseling group had more violations at follow-up than those in theGabay group. What is the sampling technique used? *Simple Random SamplingSystematic SamplingStratified Random SamplingCluster Random SamplingNone of the Above

Given info: Professor Arig randomly assigned 105 male students who had been referred to the Guidance…

Answered: Professor Arig randomly assigned 105…

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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П. STA requires each student to train a rat to perform specific behaviors. Student grades are determined by the rats' performance. Mr. Simmons is concerned that students who have prior experience with training rats or other animals may have an advantage. To test the hypothesis, she gave each student a survey at the start of the class. The survey asked students about their previous animal related experiences. At the course's conclusion, she compared the rats' learning for students with prior animal experience to students without. Do the data suggest a significant difference between the two groups of students? Rat scores for students with animal Rat scores for students with no experience experience n = 15 М-66 n = 10 M= 78 SS = 1420 SS = 2030 State the hypotheses, critical values with df and alpha = .05, calculate the test statistic and show all your work for each step of the calculations, answer the question stated above in bold-italics, AND state your conclusion using the 3-sentence…
A TA in statistics thinks that the format of the conferences and the timing of the assignments may affect students' assignment marks (out of 10). He decided to design three conferences with a different format: (1) with lecturing, (2) with demonstrating problems, and (3) with involving students in active problem-solving. Twelve students attended one of the conferences (four in each format) and asked to submit their assignments at week 3. Another twelve students attended one of the conferences but asked to submit their assignments at week 5. The data are tabled below: Assignment Week 3 Week 5 Lecture 6,7,5,7 5,5,4,5 Format Demo problems 7,8,8,9 6,7,7,6 Active problems 9,10,10,10 8,9,9,10 Note: ΣΣΣx=1385 Perform the ANOVA test and table the results, stating all critical values. State and explain what should be the follow-up analysis after the overall F-test if any (NO calculation but just explain).
1) The Mars company says that before the introduction of purple M&Ms, 20% of the candies were yellow, 20% were red, 10% were orange, 10% were blue, 10% were green, and the rest were brown. You buy a bag of M&Ms and count 29 yellow, 23 red, 12 orange, 14 blue, 8 green and 20 brown. Use a significance level of ? = 0.1. d) Use your calculator to perform the appropriate hypothesis test and report the test statistic, p- value and degrees of freedom. Be sure to write out what you entered in your calculator. e) Write a full conclusion for this test in the context of the problem.
A company receives a large number of job applications, which are at first evaluated centrally at the HR department. Each application receives a score between 0 and 100 from an HR expert. The evaluations are done by three HR experts, who apply the same, standardised scoring scheme to obtain the final score. Despite the fact that the procedure has been standardised and the experts have been trained, the management is still concerned that the system may not be fair because there may be differences between the scoring tendencies of the three experts: If at least one expert tends to give higher or lower scores than the others, that is a problem, because the score will not only depend on the quality of the application but also on which HR expert evaluated it. Therefore, the management decides to conduct a small-scale experiment to find out whether there are significant differences between the three raters' scoring tendencies. In order to control for the differences between applications, each…
what is the independent and dependent vairable in the sentence below? What are the learning styles of thestudents when group according to ageand sex?
4. A researcher was examining the effectiveness of different treatments in reducing depressive symptoms in children under the age of 10, who have been victims of child abuse. This study involves 207 children suffering from clinical depression, who were randomly assigned into four treatment conditions: Treatment A: CBT, Treatment B: Family Therapy, Treatment C: Psychoanalysis, Treatment D: Wait List. Using a significance level of 0.05, answer the following questions. Improvment Improvment Improvment Therapy Wait List CBT Family Between Groups Within Groups Total Psychoanalysis Based on Mean Based on Median Based on Median and with adjusted df Based on trimmed mean Sum of Squares Test of Homogeneity of Variances 1002.541 7085.788 8088.329 ANOVA df 3 203 206 Tests of Normality Kolmogorov-Smirnova df Statistic .105 119 .108 .092 Levene Statistic 1.934 1.932 1.932 1.940 Mean Square 334.180 34.905 df1 3 3 3 3 60 56 48 43 df2 F 9.574 203 203 164.105 203 Sig. Sig. .097 .048 .200* .200* .000…
There is some evidence that high school students justify cheating in class on the basis of poor teacher skills or low levels of teacher caring (Murdock, Miller, & Kohlhardt, 2004). Students appear to rationalize their cheating behavior based on perceptions of how their teachers view cheating. Poor teachers are thought not to know or care whether students cheat, so cheating in their classes is okay. Good teachers, on the other hand, do care and are alert to cheating, so students tend not to cheat in their classes. The scores below represent judgments of the acceptability of cheating for the students in each sample (a higher number means it is more acceptable to cheat). Is there a difference in the student ratings of how acceptable it is to cheat based on teacher type? Use an ANOVA with a = .05 to determine whether there are any significant differences among the three types of teachers in the acceptability of cheating based on student ratings. Fill in missing values in the data table and…

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