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Shapiro- Vilk Test W-stat p-value alpha Group 2 Group 3 0.9716 0.955316 0.941353 0.905274 0.731427 0.56817 0.05 0.05 0.05 Exam Score Group 1 MS MS Effect Error 24.30000 11.18519 2.172517 Which of the following statement(s) is/are always true? 1. The assumption of normality for the observations for each treatment level is valid. Levene's Test for Homogeneity of Variances (Sprea Effect: "PrepProgram" Degrees of freedom for all F's: 2, 27 F O Both I and II Р 0.133393 II. The assumption of equal variance among all treatment groups is valid.

Shapiro- Vilk Test W-stat p-value alpha Group 2 Group 3 0.9716 0.955316 0.941353 0.905274 0.731427 0.56817 0.05 0.05 0.05 Exam Score Group 1 MS MS Effect Error 24.30000 11.18519 2.172517 Which of the following statement(s) is/are always true? 1. The assumption of normality for the observations for each treatment level is valid. Levene's Test for Homogeneity of Variances (Sprea Effect: "PrepProgram" Degrees of freedom for all F's: 2, 27 F O Both I and II Р 0.133393 II. The assumption of equal variance among all treatment groups is valid.

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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Shapiro-Wilk Test W-stat p-value alpha Exam Score Group 1 Group 2 0.9716 0.955316 0.905274 0.731427 0.05 0.05 Group 3 0.941353 0.56817 0.05 Levene's Test for Homogeneity of Variances (Sprea Effect: "PrepProgram" Degrees of freedom for all F's: 2, 27 F Both I and II MS MS Effect Error 24.30000 11.18519 2.172517 0.133393 Р Which of the following statement(s) is/are always true? 1. The assumption of normality for the observations for each treatment level is valid. II. The assumption of equal variance among all treatment groups is valid.
Transcribed Image Text:Shapiro-Wilk Test W-stat p-value alpha Exam Score Group 1 Group 2 0.9716 0.955316 0.905274 0.731427 0.05 0.05 Group 3 0.941353 0.56817 0.05 Levene's Test for Homogeneity of Variances (Sprea Effect: "PrepProgram" Degrees of freedom for all F's: 2, 27 F Both I and II MS MS Effect Error 24.30000 11.18519 2.172517 0.133393 Р Which of the following statement(s) is/are always true? 1. The assumption of normality for the observations for each treatment level is valid. II. The assumption of equal variance among all treatment groups is valid.
Suppose we want to know whether or not three different exam prep programs lead to different mean scores on a certain exam. To test this, we recruit 30 students to participate in a study and split them into three groups, resulting in a balanced design. The students in each group are randomly assigned to use one of the three exam prep programs for the next three weeks to prepare for an exam. At the end of the three weeks, all of the students take the same exam. Here are the results for the diagnostics checking. Assume a 0.05 level of significance. Shapiro-Wilk Test Group 1 Group 2 Group 3 W-stat 0.9716 0.955316 0.941353 p-value 0.905274 0.731427 0.56817 alpha 0.05 0.05 0.05 Levene's Test for Homogeneity of Variances (Sprea
Transcribed Image Text:Suppose we want to know whether or not three different exam prep programs lead to different mean scores on a certain exam. To test this, we recruit 30 students to participate in a study and split them into three groups, resulting in a balanced design. The students in each group are randomly assigned to use one of the three exam prep programs for the next three weeks to prepare for an exam. At the end of the three weeks, all of the students take the same exam. Here are the results for the diagnostics checking. Assume a 0.05 level of significance. Shapiro-Wilk Test Group 1 Group 2 Group 3 W-stat 0.9716 0.955316 0.941353 p-value 0.905274 0.731427 0.56817 alpha 0.05 0.05 0.05 Levene's Test for Homogeneity of Variances (Sprea
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