## Question

###### 4.57 Influencing Voters: Is There Difterence in Effectiveness between a Phone Call and Flyer? Exercise 4.37 on page 235 describes a study to inves- tigate which method, recorded phone call or flyer, is more effective in persuading voters to vote for particular candidate. Since in this case, the alternative hypothesis is not specified in par- ticular direction the hypotheses are Ho Pc Pf VS Ha Pc # Pf: AlI else is as in Exercise 4.56_ including the randomization distribution shown in Figure 4

4.57 Influencing Voters: Is There Difterence in Effectiveness between a Phone Call and Flyer? Exercise 4.37 on page 235 describes a study to inves- tigate which method, recorded phone call or flyer, is more effective in persuading voters to vote for particular candidate. Since in this case, the alternative hypothesis is not specified in par- ticular direction the hypotheses are Ho Pc Pf VS Ha Pc # Pf: AlI else is as in Exercise 4.56_ including the randomization distribution shown in Figure 4.18 (a) Sketch smooth curves that roughly approximate the distribution in Figure 4.18 and shade in the proportion of the area corresponding to the p-value for each of D = 0.2 and D = -0.4 b Two possible sample statistics are given below, along with several possible p-values. Select the most accurate p-value for each sample statistic Statistics D=02,D =-0.4 P-values 0.008,0.066,0.150,0.392,0.842 Ofall five p-values given in part (b) , which prO- vides the strongest evidence that the methods are not equally effective?