backspace num e random samples of elementary pupils are classified according to des and watching television during a week is shown below. Test the portions that watching television is not the same among grade school pils. Use 0.05 level of significance. Watching TV Grades Watching Not Watching Grade 3 15 8 Grade 4 20 7 Grade 5 25 6 Grade 6 15 4 9. A survey was administered to determine whether educational attainment and teaching efficiency rating is related. A total of 110 college faculty members were taken from a certain university and the results are shown below. Use 0.05 level of significance. Educational Teaching Efficiency Rating Attainment Excellent Good Fair Poor Doctor's Degree 10 7 6 3 Master's Degree 20 15 6 3 Bachelor's Degree 7 10 15 8 10. The distribution of Filipinos aged 15 and over classified according to smoking behavior and marital status is summarized below. Is smoking behavior related to marital status? Use 0.05 level of significance Smoking Behavior Marital Status Current-Smoker | Non-Smoker Ex-Smoker Single 646 1653 185 Married 1642 4817 615 Separated 41 96 19 Widowed 80 380 64