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H1: X1- X2 #0 O Ho: H1-H2 =0 H:Hュー2*0 O Họ: H1-H2 20 QUESTION 43 Which of the following represents the proper critical region (MUST SHOW WORK FOR THIS PROBLEM). O +2.70 O 2.75 O +2.75 O 2.70 QUESTION 44 Compute the test statistics (t-obs). (MUST SHOW WORK FOR THIS PROBLEM).

H1: X1- X2 #0 O Ho: H1-H2 =0 H:Hュー2*0 O Họ: H1-H2 20 QUESTION 43 Which of the following represents the proper critical region (MUST SHOW WORK FOR THIS PROBLEM). O +2.70 O 2.75 O +2.75 O 2.70 QUESTION 44 Compute the test statistics (t-obs). (MUST SHOW WORK FOR THIS PROBLEM).

MATLAB: An Introduction with Applications
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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Please show me the work needed to find t observed if one were to do it by hand

QUESTION 42 A teacher wants to examine the effect of frequent quizzes on retention of class material. In one of her sections, she gives 5 quizzes throughout the semester. In the other section, she only has two large exams. At the end of the semester, a test of overall statistics knowledge is given to all students. Below are the summary statistics for both sections. Two Exams Frequent Quizzes n= 36 X = 82 n= 25 X= 78 s= 2.65 s= 2.83 Using an independent-samples t-lest, indicate whether the two classes result in significantly different amounts of knowledge retained. Use the .01 level of significance. (questions 42-46) Which of the following accurately represents the null and alternative hypotheses? (MUST SHOW WORK FOR THIS QUESTION) 'Hoi X1- X2s0 Hạ: Xạ - X, >0 O Ho: H1-H2=0 H1: H1-H2 #0 O Ho: H1-H220 H: H1-H2 <0 QUESTION 43 Which of the following represents the proper critical region (MUST SHOW WORK FOR THIS PROBLEM) . O +2.70 O 2.75 O +2.75 O 2.70 QUESTION 44 Compute the test statistics (t-obs). (MUST SHOW WORK FOR THIS PROBLEM). QUESTION 45 Based on the calculated test statistic, would you reject the null hypothesis established in question 42 (MUST SHOW WORK FOR THIS PROBLEM)? O Yes O No QUESTION 46 Based on the previously conducted steps we can conclude that (MUST SHOW WORK FOR THIS PROBLEM): O There is no significant difference in knowledge retained between the two classes O The "two exams" class retained significantly less knowledge compared to the "frequent quizzes" class O There is a significant difference in knowledge retained between the two classes O The "frequent quizzes" class retained significantly more knowledge compared to the "two exams" class
Transcribed Image Text:QUESTION 42 A teacher wants to examine the effect of frequent quizzes on retention of class material. In one of her sections, she gives 5 quizzes throughout the semester. In the other section, she only has two large exams. At the end of the semester, a test of overall statistics knowledge is given to all students. Below are the summary statistics for both sections. Two Exams Frequent Quizzes n= 36 X = 82 n= 25 X= 78 s= 2.65 s= 2.83 Using an independent-samples t-lest, indicate whether the two classes result in significantly different amounts of knowledge retained. Use the .01 level of significance. (questions 42-46) Which of the following accurately represents the null and alternative hypotheses? (MUST SHOW WORK FOR THIS QUESTION) 'Hoi X1- X2s0 Hạ: Xạ - X, >0 O Ho: H1-H2=0 H1: H1-H2 #0 O Ho: H1-H220 H: H1-H2 <0 QUESTION 43 Which of the following represents the proper critical region (MUST SHOW WORK FOR THIS PROBLEM) . O +2.70 O 2.75 O +2.75 O 2.70 QUESTION 44 Compute the test statistics (t-obs). (MUST SHOW WORK FOR THIS PROBLEM). QUESTION 45 Based on the calculated test statistic, would you reject the null hypothesis established in question 42 (MUST SHOW WORK FOR THIS PROBLEM)? O Yes O No QUESTION 46 Based on the previously conducted steps we can conclude that (MUST SHOW WORK FOR THIS PROBLEM): O There is no significant difference in knowledge retained between the two classes O The "two exams" class retained significantly less knowledge compared to the "frequent quizzes" class O There is a significant difference in knowledge retained between the two classes O The "frequent quizzes" class retained significantly more knowledge compared to the "two exams" class
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