The following table shows the grades obtained from 84 students from two Schools (S1 and S2 ) in an exam Grades Total School Excellent Very good Good 8. 10 23 19 17 25 61 Total 24 25 35 84 The...

Extracted text: The following table shows the grades obtained from 84 students from two Schools (S1 and S2 ) in an exam Grades Total School Excellent Very good Good 8. 10 23 19 17 25 61 Total 24 25 35 84 The experiment is to select one of these students at random, then: The probability that the selected student has got an "excellent grade" or" Good grade " is O a. 0.7024 O b. 0.6514 Oc. None of these O d. 0.1786 Clear my choice