Determine the null hypothesis and the alternative hypothesis. Is the salespersons level of trust influenced by the choice of closing method? Test at the 5% significance level.

A B2B Marketing Insider blog of October 7, 2010 examined five currently-used sales closing techniques. Sales scenarios are presented to a sample of 230 purchasing executives. Each subject received one of the five closing techniques or a scenario in which no sales close was achieved. After reading the sales scenario, each executive was asked to rate his/her level of trust in the salesperson on a 7-point scale. The following table reports the six treatments employed in the study and the number of subjects receiving each treatment: Treatments: Sales Closing Sample Size Technique No Close 35 Financial close 35 Time Line close 30 Sympathy close 40 The Visual close 35 Thermometer close 55