A random sample of 1,002 Americans in a Gallup survey was asked how they tip at sit-down restaurants: 1 = Credit card, 2 = Debit card, 3 = Cash. They were also asked how often they tip: 1 = Always, 2 = Most of the time, 3 5 Sometimes. Is there sufficient evidence to infer that there is a relationship between frequency of tipping and the method of tipping?