A researcher is interested in the effect type of residence has on the personal happiness of college students. She selects samples of students who live in campus dorms, in off-campus apartments, and at home and asks the 12 respondents to rate their happiness on a scale of 1 (not happy) to 10 (happy). Test the null hypothesis that happiness does not differ by type of residence.

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Dorms Apartments At Home 2 9 4 3 4