Which statements are the possible null hypothesis of an ANOV

Which statements are the possible null hypothesis of an ANOVA test? Select ALL answers that apply.

A ) 0 = 1 = 2
B )0 = 1 = 2
C) 0 = 1
D) 0 1
E) 0 = 1
F) 0 1

Which questions can be answered with an ANOVA test? Select ALL answers that apply.

1) Does attending cultural events affect a college student\'s GPA? Students were asked to rate their attendance of cultural events on a scale of 1 to 5. Are the mean GPA\'s the same for all five groups?
2) The majors at a university were grouped into 5 categories. Do the categories each have the same number of females?
3) On average, do each of these five college-student groups (freshmen, sophomores, juniors, seniors, and graduate students ) consume the same number of daily cigarettes?
4) Is the proportion of college females who smoke daily significantly different than the proportion of college males who smoke daily?
5) College students are categorizes as \"low\", \"medium\", or \"high\", depending on if they work \"less than 5\", \"between 5 and 15\" (including the endpoints), or \"more than 15\" hours per week, respectively. Are the mean GPA\'s in each of these groups the same?
6) Is the mean number of daily cigarettes consumed by females significantly different than the mean number of cigarettes consumed by males?

Solution

ANOVA test is used to comparing more than 2 popualtion mean. So option (A) is correct.

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ANOVA test is used to comparing more than 2 popualtion mean. So following are questions can be answered with an ANOVA test:

1) Does attending cultural events affect a college student\'s GPA? Students were asked to rate their attendance of cultural events on a scale of 1 to 5. Are the mean GPA\'s the same for all five groups?

3) On average, do each of these five college-student groups (freshmen, sophomores, juniors, seniors, and graduate students ) consume the same number of daily cigarettes?

5) College students are categorizes as \"low\", \"medium\", or \"high\", depending on if they work \"less than 5\", \"between 5 and 15\" (including the endpoints), or \"more than 15\" hours per week, respectively. Are the mean GPA\'s in each of these groups the same?