Question

When 3 or more groups are included in an ANOVA, and the probability level indicates that the null hypothesis should be rejected, what does this tell the researcher?

Group of answer choices

That each mean is significantly different than every other one

Specific post hoc analyses should be done to determine where there are group differences

Which groups are different from which other groups

It will be necessary to perform t-tests on each of the pairs of means to determine which pair (or pairs) is (are) different

Answer 1

let us consider H0 : the mean is same for all the three groups

H1 : the means are not same

if the probability level indicates that the null hypothesis should be rejected

it tells us that each mean is significantly different than every other one