QUESTION 5 Eleven secretaries at a university in Kuala Lumpur were asked to take a special three-day intensive course to improve their keyboarding skills. At the beginning and again at the end of the course, they were given a particular two-page letter and asked to type it flawlessly. The data from the typing tests are shown in the following Table 3. Table 3 Secretary Number of Improvement years of (words per experience minute) (y) 5 140 3 120 2 80 4 100 130 4 90 4 110 120 1 130 J 5 130 K 4 100 -= naloa a) Compute the correlation coefficient between the number of years of experience and the improvement (5 Marks) b) Develop the regression equation for the improvement based on number of years of experience. (5 Marks) [Total: 10 Marks)