# An instructor in an economics class is considering three different texts. He is also considering three types of examinations-multiple choice, essay, and a mix of multiple choice and essay questions. During the year he teaches nine sections of the course

An instructor in an economics class is considering three different texts. He is also considering three types of examinations-multiple choice, essay, and a mix of multiple choice and essay questions. During the year he teaches nine sections of the course and randomly assigns a text-examination type combination of each section. At the end of the course he obtained students' evaluations for each section. These ratings are shown in the accompanying table.

a. Prepare the analysis of variance table.

b. Test the null hypothesis of equality of population mean ratings for the three texts.

c. Test the null hypothesis of equality of population mean ratings for the three examination types.

**Transcribed Image Text:**

## Text Examination Multiple choice 48 Essays Mix 5340 4.9 5.3 4.6 5.0 4.3 5.1 4.6 4.8

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## a Twoway ANOVA table b texts 1120 therefore reject H 0 at the 5 level c exam type 520 thereforâ€¦View the full answer

**Related Book For**

## Statistics For Business And Economics

**ISBN:** 9780132745659

8th Edition

**Authors:** Paul Newbold, William Carlson, Betty Thorne

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