An annual championship event is the most widely watched sporting event in a country each year. In recent years, there has been a great deal of interest in the ads that appear during the game. These ads vary in length with most lasting 30 seconds or 60 seconds. The accompanying data represent the ad length and ad scores from a recent championship. Complete parts (a) through (c). 30-Second Ads 60-Second Ads 44 20 38 36 40 70 57 54 59 57 45 28 35 52 52 23 34 35 45 67 a. Assuming that the population variances from the 30-second ads and the 60-second ads are equal, is there evidence of a difference in the mean score between the two types of ads? Use = 0.01. Let be the mean score for the 30-second ads and 2 be the mean score for the 60-second ads. Determine the hypotheses. Choose the correct answer below. OA. Ho: 24 B. Ho: H H2 H: = H H: M