6. (15 pts) Student Union at Camosun College conducted a survey on students' opinion on a tuition reduction campaign. A random sample of 400 students is selected, and there are 15 of those are against the campaign. n=400 a. What is the estimated proportion against the campaign in the population? is P(against) 20 638 IP 400 b. Develop a 95 percent confidence interval for the proportion that is against the campaign. Interpret this interval. 95/ 221 P + 2 J PCI-P) 0.033 + 1.25 70.0.240.76 400 10.0193 , 5.0569} FWE derve all possible confdence intervals for all possible samples szed of 100 95% of such confdence ntervals Conver the popularon proportons 5% do not cover ths el m'ght Cover or not cover the real popularon proportions