# Question

Christine has always been weak in mathematics. Based on her performance prior to the final exam in Calculus, there is a 40% chance that she will fail the course if she does not have a tutor.

With a tutor, her probability of failing decreases to 10%. There is only a 50% chance that she will find a tutor at such short notice.

a. What is the probability that Christine fails the course?

b. Christine ends up failing the course. What is the probability that she had found a tutor?

With a tutor, her probability of failing decreases to 10%. There is only a 50% chance that she will find a tutor at such short notice.

a. What is the probability that Christine fails the course?

b. Christine ends up failing the course. What is the probability that she had found a tutor?

## Answer to relevant Questions

An analyst expects that 20% of all publicly traded companies will experience a decline in earnings next year. The analyst has developed a ratio to help forecast this decline. If the company is headed for a decline, there is ...An analyst thinks that next year there is a 20% chance that the world economy will be good, a 50% chance that it will be neutral, and a 30% chance that it will be poor. She also predicts probabilities that the performance of ...How much you smile in your younger days can predict your later success in marriage (http://msnbc.com, April 16, 2009). The analysis is based on the success rate in marriage of people over age 65 and their smiles when they ...An analyst predicts that there is a 40% chance that the U.S. economy will perform well. If the U.S. economy performs well, then there is an 80% chance that Asian countries will also perform well. On the other hand, if the ...Consider the following discrete probability distribution.a. Complete the probability distribution.b. Graphically depict the probability distribution and comment on the symmetry of the distribution.c. What is the probability ...Post your question

0