Assume 70% of students at a university pass biology class without having to retake it. If 5 students were selected at random, answer the following questions.
- What is the mean and variance of university students passing biology class without having to retake it?
- What is the probability that exactly 3 students have passed without taking it again? (Do not use the Binomial table for this part/ Use the formula)
- That at least 2 passed the course without taking it again? (You may use the Binomial table for this part)