15. A researcher has conducted a study on reaction times with 20 participants in each of two conditions.

She finds that the variance for the first condition is 2 seconds and for the second condition is 8 seconds. Which of the following statements is true?

(a) She should not use parametric tests because she has failed to meet the assumption of homogeneity of variance

(b) She has completely met all of the assumptions underlying the use of parametric tests

(c) She has failed to meet the assumption of homogeneity of variance but could use parametric tests because she has equal sample sizes

(d) None of the above