To assess the effectiveness of a cola video ad for cola B, a random sample of 35 individuals from a target audience was selected to participate in a copy test. Participants viewed two ads, one of which was the ad being tested (cola B). Participants then answered a series of questions about how much they liked the ads. An adindex measure was created and shown in the accompanying table; the higher the adindex value, the more likeable the ad. State your findings and conclusions. Assume a = 0.05. Click the icon to view the data table of the adindex ratings. Mean of the difference = | - 5.91 (Round to two decimal places as needed.) Perform a paired t test Let py be the population mean adindex rating for cola A and let us be the population mean adindex rating for cola B. What are the null and altemative hypotheses? O A. Ho HD =0 (where up = 11 -12) O B. Ho HD =0 (where HD = 11 - #2) H1 : HD >0 O C. Ho HD #0 (where HD = Hy - H2) O D. Ho: HD 20 (where up = 11 - H2) H1 : HD =0 H1: HD