A Statistics professor has observed that for several years students score an average of 114 points out of 150 on

A Statistics professor has observed that for several years students score an average of 114 points out of 150 on the semester exam. A salesman suggests that he try a statistics software package that gets students more involved with​ computers, predicting that it will increase​ students’ scores. The software is​ expensive, and the salesman offers to let the professor use it for a semester to see if the scores on the final exam increase significantly. The professor will have to pay for the software only if he chooses to continue using it. In the trial course that used this​ software, 246 students scored an average of 117 points on the final with a standard deviation of 8.5 points. Complete parts​ a) and​ b) below. ​a) Should the professor spend the money for this​ software? Support this recommendation with an appropriate test. Use 0.05. What are the null and alternative​ hypotheses? ​: What is the P-Value?

Leave a Reply

Your email address will not be published. Required fields are marked *