Undergraduate students taking an introductory statistics course at Duke University conducted a survey about GPA and major.

Question:

Undergraduate students taking an introductory statistics course at Duke University conducted a survey about GPA and major. The side-by-side box plots show the distribution of GPA among three groups of majors. Also provided is the ANOVA output.

(a) Write the hypotheses for testing for a difference between average GPA across majors.

(b) What is the conclusion of the hypothesis test?

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OpenIntro Statistics

ISBN: 9781943450077

4th Edition

Authors: David Diez, Mine Çetinkaya-Rundel, Christopher Barr

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Question Posted: Jul 20, 2023 08:44 AM

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Undergraduate students taking an introductory statistics course at Duke University conducted a survey about GPA and major.

Question:

GPA 4.0 3.5 3.0- 2.5 Arts and Humanities Natural Sciences Df major 2 Residuals 195 Sum Sq 0.03 15.77 Mean Sq 0.015 0.081 Social Sciences F value Pr(>F) 0.185 0.8313

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a The hypotheses for testing the difference between average GPA across majors are as follows Null hy...View the full answer

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