Practice Solve each problem In order to study the relationship between the amount of sleep a student gets and his or her number of students who passed and failed an exam and the number of students who got more or less 6 performance a researcher collected data from 120 students The two way frequency table shows the hours of sleep the night before Less than 6 hours of sleep More than 6 hours of sleep Total a Total Failed exam 10 22 98 8 18 120 To the nearest percent what is the probability that a student who failed the exam got less than 6 hours of sleep Passed exam 12 90 b To the nearest percent what is the probability that a student who got less than 6 hours of sleep failed the c To the nearest percent what is the probability that a student got less than 6 hours of sleep and failed the exam