MATH 1281 Statistic Inference

Graded Quiz Unit 3 A case study that deals with the effect of prior reputation on the evaluation of an instructor is presented in Question 11.1 in the book (Section 11.5). Students were exposed to e ither one of two conditions, C and P, and were asked to rate a lecture given by the instructor. It was found that the average rating among the 25 students that were exposed to condition C was 2.613 and the average rating among the 24 students that were exposed to condition P was 2.236. The sample sta...

An automobile producing company operates car dealerships that sell its cars. In order to assess the service costumers get at the dealerships a team from the Customer Relationship Department was assembled. The team was sent to 20 randomly selected dealerships. Each dealership was visited once by the team for an entire working day. During a visit the team interviewed all the customers that arrived at that dealership. One of the questions that each of the customers were asked is: "Do you cur...