# Probability

posted by Angela

A college professor has been studying the relationship between the attendance habits of his students and the grades they earn in his courses. A breakdown of 200 of his students revealed the following:
Attended regularly --- 160
Attended sometimes --- 40
Passed --- 170 and Failed --- 30
140 Passed and 20 Failed
30 Passed and 10 failed
Assume that a student is chosen at random. What is the probability that the student passes the course, given that the student attended class sometimes?

1. PsyDAG

The probability of both/all events occurring is found by multiplying the individual events.

40/200 * 30/40 = ?

## Similar Questions

1. ### Statistics

A professor has noticed that, even though attendance is not a component of the final grade for the class, students that attend regularly generally get better grades. In fact, 39% of those who come to class on a regular basis receive …
2. ### Normal Probability Distribution

A professor at a local college noted that the grades of his students were normally distributed with an average percentage of 74 and a population standard deviation of 10. He found that 6.3% of his students received A's while 2.5% of …
3. ### College Algebra

The school play sold 498 tickets. Students paid \$3.50 each, while non-students paid \$5.50 each. If a total of \$2121.00 was collected, how many students and how many non-students attended?
4. ### math

35 students attended class on monday tuesday 26 students attended what was percent of decrease,show steps to solve
5. ### math

The Grade 8 students had a graduation dinner. They paid a flat rate of \$125 for the use of the hall, plus \$13 for each student who attended. The total cost of the dinner was \$944. How many students attended the dinner ?
6. ### math

All 30 of the students in a mathematics class attended class on Monday. On Tuesday only 22 students attended. What was the percent decrease?
7. ### Math

Theo made the table below to show the number of middle school students who attended the last football game. If the data were displayed in a circle graph, how many degrees would be in the sector representing the eigth graders?
8. ### Pre- Algebra

Theo made the table below to show the number of middle school students who attended the last football game. If the data were displayed in a circle graph, how many degrees would be in the sector representing the eighth graders?
9. ### Math

120 people attended the baseball game. Adults cost \$6 and students cost \$4 to attend the game. The game raised \$600 from the attendance. How many students attended the game?
10. ### math

To determine whether there is a relationship between the type of school attended and verbal reasoning scores for Irish students, three samples with 25 students, in each group, were randomly selected from data used by Raferty and Hout …

More Similar Questions