Drs. Maung and Barambah investigated whether temperature has an effect on purchasing behavior. Participants were seated on a chair that was warmer, colder, or at room temperature and then were asked to judge the value of a luxury item, such as a watch or shoes. The researchers recorded if the judged value was higher, matching, or lower than the actual value. The null hypothesis was that the frequency of value judgements would be equal for people in all temperature conditions. They set the alpha level to .05, determined the critical value to be 9.488, and calculated a test statistic of 15.781 for a sample size of 73. What is the effect size for their study? (Round your answer to two decimal places.) a. .47 b. .40 c. .33 d. .29