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(a) What is the value of the mean square for treatments (the "between groups" mean square) that would be reported in the W ANOVA test? (b) What is the value of the mean square for error (the "within groups" mean square) that would be reported in the ANOVA || test?

(a) What is the value of the mean square for treatments (the "between groups" mean square) that would be reported in the W ANOVA test? (b) What is the value of the mean square for error (the "within groups" mean square) that would be reported in the ANOVA || test?

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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At LLD Records, some of the market research of college students is done during promotions on college campuses, while other market research of college students is done through anonymous mail, phone, internet, and record store questionnaires. In all cases, for each new CD the company solicits an "intent-to- purchase" score from the student, with 0 being the lowest score ("no intent to purchase") and 100 being the highest score ("full intent to purchase"). The manager finds the following information for 145 intent-to-purchase scores for a soon-to-be-released CD: Sample Sample Sample size Group mean variance On campus 29 64.4 88.3 By mail 29 66.2 120.8 By phone 29 64.8 118.2 By internet 29 61.6 98.7 In a store 29 60.4 99.8 Send data to calculator Send data to Excel The manager's next step is to conduct a one-way, independent-samples ANOVA test to decide if there is a difference in the mean intent-to-purchase score for this CD depending on the method of collecting the scores. Answer the following, carrying your intermediate computations to at least three decimal places and rounding your responses to at least one decimal place. (a) What is the value of the mean square for treatments (the "between groups" mean square) that would be reported in the | ANOVA test? (b) What is the value of the mean square for error (the "within groups" mean square) that would be reported in the ANOVA test? ?
Transcribed Image Text:At LLD Records, some of the market research of college students is done during promotions on college campuses, while other market research of college students is done through anonymous mail, phone, internet, and record store questionnaires. In all cases, for each new CD the company solicits an "intent-to- purchase" score from the student, with 0 being the lowest score ("no intent to purchase") and 100 being the highest score ("full intent to purchase"). The manager finds the following information for 145 intent-to-purchase scores for a soon-to-be-released CD: Sample Sample Sample size Group mean variance On campus 29 64.4 88.3 By mail 29 66.2 120.8 By phone 29 64.8 118.2 By internet 29 61.6 98.7 In a store 29 60.4 99.8 Send data to calculator Send data to Excel The manager's next step is to conduct a one-way, independent-samples ANOVA test to decide if there is a difference in the mean intent-to-purchase score for this CD depending on the method of collecting the scores. Answer the following, carrying your intermediate computations to at least three decimal places and rounding your responses to at least one decimal place. (a) What is the value of the mean square for treatments (the "between groups" mean square) that would be reported in the | ANOVA test? (b) What is the value of the mean square for error (the "within groups" mean square) that would be reported in the ANOVA test? ?
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