A researcher is interested in comparing SAT scores for students enrolled in publ

Question

A researcher is interested in comparing SAT scores for students enrolled in public schools, private schools, and those home schooled. She selects a random sample of 20 high school students from each group and administers the SAT exam to them. She is interested in testing the null hypothesis that the mean SAT score is the same for each type of schooling using the one-way ANOVA. A possible alternative in the one-way ANOVA is ___ ?

a. Both choices are correct.

b. the mean SAT scores are the same for home schooling and private schools, and both are higher than the average for public schools.

c. the mean SAT scores are the same for public and private schools, but these are both lower than the average SAT for home schooling.

Explanation / Answer

SolutionA:

Null hypothesis:

Ho:

All the 3 groups means are equal

Alternative Hypothesis:

H1:

Atleast one of the group means are different.

a. Both choices are correct.

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