RC Cola claims that 20 percent of the population can identify its products. in efforts to boost their identity, RC cola employs a famous spokesperson to advertise. a survey is then taken to asses the results of the ad campaign. the results show that 21 percent of the 1000 respondents can identify RC Cola products. has the advertising campain made any difference in the product identity? use 0.05 significance level. a. state the null hypothesis HO: H1: B state the decision rule c. compute the value of the test statistic d. estimate the p value e. what is your decision regarding null hypothesis?