One-hundred students were allowed to re-take an exam for their math course. the
probability distribution shows how studying for the latest exam affected their grade
when compared with the first time they took the exam. what is the probability that a
student who studied for the exam saw an increase in their exam grade? round to the
nearest thousandth.
exam grades
raise in grades
no raise in grades
totals
studied did not study
0.52 0.06
0.05 0.37
0.57 0.43
totals
0.58
0.42
o 0.912
o 0.897
o 0.570
o 0.088