Here are two questions that I am completely stuck on. Im not even sure if they would be solved via permutation/combination formulas...
In the second I am so confused because it seems like the first sentence answers the question... PLEASE if you are able to answer either of these can you possibly take the time to show me your process? I am just so stumped as to how to approach these two.
1. The Gallup Poll reported that 52% of Americans used a seat belt the last time they got into a car. If 4 people are selected at random, find the probability that they all used a seat belt the last time they got into a car.
2. At a large university, the probability that a student takes calculus and on the dean's list is 0.042. The probability that a student is on the dean's list is 0.21. Find the probability that the student is taking calculus, given that he or she is on the dean's list.
In the second I am so confused because it seems like the first sentence answers the question... PLEASE if you are able to answer either of these can you possibly take the time to show me your process? I am just so stumped as to how to approach these two.
1. The Gallup Poll reported that 52% of Americans used a seat belt the last time they got into a car. If 4 people are selected at random, find the probability that they all used a seat belt the last time they got into a car.
2. At a large university, the probability that a student takes calculus and on the dean's list is 0.042. The probability that a student is on the dean's list is 0.21. Find the probability that the student is taking calculus, given that he or she is on the dean's list.