Vendors of hearing aids test them by having patients listen to lists of words and repeat what they hear. A researcher investigated four different word lists used in hearing assessment. She wanted to know whether the lists were equally difficult to understand in the presence of a noisy background. To nd out, she tested 24 g subjects with normal hearing and measured the number of words perceived correctly in the presence of background noise. Here are the boxplots of the four lists. g Complete parts a through c. \"c: Source DF Sum of Squares Mean Square F-ratio P-valuei Teller 3 408.297 136.099 2.2475 0.0880 g Error 92 5571.060 60.555 E Total 95 5979.357 (3 a) What are the null and alternative hypotheses? '1'} A. H0: p1 p3 and p3 P3 3' 9- H0: P2 > Psv HA: P2 = P3 '73" 5- H0: P1 = P2 = P3 = P4 3' F- H0: P1 = P2 = P3 = P4 HA5 P1 P3 and P3