8. Given are the grades of 10 students for prelim and midterm period in Statistics Prelim 75 70 65 90 85 85 80 70 65 90 Midterm 80 75 65 95 90 85 90 75 70 90 a. Computer and interpret. b. Compute / and interpret. c. Test the significance of r. d. Determine the regression equation and interpret e. Estimate the midterm grade of a student whose prelim grade is 95. 9. Four laboratories are being used to perform chemical analyses. Samples of the same material are sent to the laboratories for analysis as part of the study to determine whether or not they give, on the average, the same result. The analytical results for the four laboratories are as follows: LABORATORY A B C D 58.7 62.7 55.9 60.7 61 4 64.5 56.1 60.3 60 9 63.1 57.3 60.9 59.1 59.2 55.2 61.4 58.2 60.3 58.1 62.3 Perform ANOVA and give conclusion concerning laboratories