Jack Wolicki is a production supervisor in an industrial manufacturing company. He would like to determine whether there is more variation in the number of units produced on the afternoon shift than on the day shift. A sample of 15 day-shift workers showed that the mean number of units produced was 200 with a standard deviation of 19.6. A sample of 10 afternoon-shift workers showed that the mean number of units produced was 205 with a standard deviation of 23.8. At the 0.05 significance level, is there more variation in the number of units produced on the afternoon shift?