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, 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 115 intent-to-purchase scores for a soon-to-be-released CD: Sample Sample Sample size Group mean variance On campus 23 67.6 80.9 By mail 23 67.3 135.2 By phone 23 67.7 68.2 By internet 23 59.7 107.3 In a store 23 61.3 54.1 Send data to calculator Send data to Excel Suppose that the five populations of scores from which these samples were drawn are approximately normally distributed and have the same mean and the same variance. Answer the following, carrying your intermediate computations to at least three decimal places and rounding your responses to at least one decimal place.

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, 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 115 intent-to-purchase scores for a soon-to-be-released CD: Sample Sample Sample size Group mean variance On campus 23 67.6 80.9 By mail 23 67.3 135.2 By phone 23 67.7 68.2 By internet 23 59.7 107.3 In a store 23 61.3 54.1 Send data to calculator Send data to Excel Suppose that the five populations of scores from which these samples were drawn are approximately normally distributed and have the same mean and the same variance. Answer the following, carrying your intermediate computations to at least three decimal places and rounding your responses to at least one decimal place.

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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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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, 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 150 intent-to-purchase scores for a soon-to-be-released CD: Sample Sample Sample size Group mean variance On campus 30 64.5 68.9 By mail 30 63.0 77.1 By phone 30 62.8 125.1 By internet 30 62.3 106.0 In a store 30 68.2 85.9 Send data to calculator Send data to Excel Suppose that the five populations of scores from which these samples were drawn are approximately normally distributed and have the same mean and the same variance. Answer the following, carrying your intermediate computations to at least three…
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 105 intent-to-purchase scores for a soon-to-be-released CD: Sample Sample Sample size Group mean variance On campus 21 66.2 159.5 By mail 21 55.5 177.7 By phone 21 65.0 62.5 By internet 21 67.0 130.7 In a store 21 63.9 161.2 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…