Please show me the work needed to find t observed if one were to do it by hand QUESTION 42A teacher wants to examine the effect of frequent quizzes on retention of class material. In one of hersections, 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 thesummary statistics for both sections.Two ExamsFrequent Quizzesn= 36X = 82n= 25X= 78s= 2.65s= 2.83Using an independent-samples t-lest, indicate whether the two classes result in significantly differentamounts of knowledge retained. Use the .01 level of significance. (questions 42-46)Which of the following accurately represents the null and alternative hypotheses? (MUSTSHOW WORK FOR THIS QUESTION)'Hoi X1- X2s0Hạ: Xạ - X, >0O Ho: H1-H2=0H1: H1-H2 #0O Ho: H1-H220H: H1-H2 <0QUESTION 43Which of the following represents the proper critical region (MUST SHOW WORK FOR THIS PROBLEM).O +2.70O 2.75O +2.75O 2.70QUESTION 44Compute the test statistics (t-obs). (MUST SHOW WORK FOR THIS PROBLEM).QUESTION 45Based on the calculated test statistic, would you reject the null hypothesis established in question42 (MUST SHOW WORK FOR THIS PROBLEM)?O YesO NoQUESTION 46Based on the previously conducted steps we can conclude that (MUST SHOW WORK FORTHIS PROBLEM):O There is no significant difference in knowledge retained between the two classesO The "two exams" class retained significantly less knowledge compared to the "frequent quizzes" classO There is a significant difference in knowledge retained between the two classesO The "frequent quizzes" class retained significantly more knowledge compared to the "two exams" class

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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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).