A school psychologist wants to test the effectiveness of a new method of teaching English. She recruits 200sixth-grade students and randomly divides them into two groups. Group 1 is taught by means of the newmethod, while group 2 is taught by traditional methods. The same teacher is assigned to teach both groups.At the end of the year, an achievement test (graded on a scale from 1-10) is administered and the results ofthe two groups are compared. Complete parts (a) through (h) below......(a) What is the response variable in this experiment?A. The students' ability in EnglishB. The scores on the achievement tests of both group 1 and group 2C. The score of group 1 on the achievement testD. The score of group 2 on the achievement test(b) Is the response variable qualitative or quantitative?A. The response variable is quantitative because it is a measurement.B. The response variable is quantitative because it is a characteristic.C. The response variable is qualitative because it is a characteristic.D. The response variable is qualitative because it is a measurement.(c) Which of the following explanatory variables is manipulated?School districtGrade levelMethod of teachingTeacher(d) What are the treatments? How manv treatments are there?O O A school psychologist wants to test the effectiveness of a new method of teaching English. She recruits 200.....(d) What are the treatments? How many treatments are there?A. The treatments are the students. There are 200 treatments.B. The treatments are the new teaching method and the traditional teaching method. There are 2treatments.C. The treatments are group 1 and group 2. There are 2 treatments.D. The treatment is the teacher. There is 1 treatment.(e) Which group serves as the control group?A. Group 2 serves as the control group because this group corresponds to the standard method thatwill be compared to the other method.B. Group 1 serves as the control group because this group corresponds to the standard method thatwill be compared to the other method.C. Group 1 serves as the control group because this group corresponds to the new teaching methodthat is being tested.D. Group 2 serves as the control group because this group corresponds to the new teaching methodthat is being tested.(f) What type of experimental design is this?Case-control studyCompletely randomized designMatched-pairs designRandomized block design

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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 college president wanted to know how 10-year-after-graduation salaries for aca- demic majors (English, psychology, math, etc.) compared to salaries for career-oriented majors (business, engineering, computer science, etc.). She matched 84 academic majors at her college with 84 career-oriented majors on the basis of SAT scores and GPA. She found MAcademic = $59,250, MCareer =$61,000, sD = 9,500. Use an alpha of .05 and a two-tailed test to determine if there is a difference in salaries.
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