According to Mediaweek, there are three methods of advertising on the Web.

Method 1 is to serve ads to users who clicked on an icon for the ad; Method 2 serves ads through visits to the company's Web site. And Method 3 uses highly targeted content sites. Which method, if any, is most effective? Suppose the following data are the numbers of responders to each method who have eventually made a purchase, taken over a random sample of days for each method.

Method 1: 55, 79, 88, 41, 29, 85, 70, 68, 90

Method 2: 42, 21, 38, 40, 39, 61, 44, 26, 28

Method 3: 108, 111, 81, 65, 89, 100, 92, 97, 80

Conduct the test and state your conclusion.