Over the past year, the vice president for human resources at a large medical center has run a series of three- month workshops aimed at increasing worker motivation and performance. To check the effectiveness of the workshops, she selected a random sample of 35 employees from the personnel files. She collected the employee performance ratings recorded before and after workshop attendance and stored the paired ratings in Perform. Compute descriptive statistics and perform a paired t test. State your findings and conclusions in a report to the vice president for human resources.