A researcher selects a sample of 24 college students and has them rate their liking for two advertisements aimed at improving the image of the college.The researcher finds that liking ratings significantly differed,t = 2.900.Use $\omega$² to compute the proportion of variance for this result. A) $\omega$² = .30 B) $\omega$² = .24 C) $\omega$² = .21 D) there is not enough information to answer this question

Question

Quizplus · Accepted Answer

The proportion of variance can be calculated as (t^2)/(t^2 + df) where df is the degrees of freedom, which is 23 in this case. Plugging in the values, we get (2.900^2)/(2.900^2 + 23) = 0.2369, which is approximately equal to 0.24. Therefore, the answer is B.

A Researcher Selects a Sample of 24 College Students and Has