# Statistics

posted by .

Bart is taking two classes, backpacking and biology. His probability of passing backpacking is 0.54, that of failing biology is 0.83, and that of passing at least one of the two courses is 0.65. Find the probability of the following.

A. Joe will pass both courses.
B. Joe will pass exactly one course.
C. Joe passes neither course.

You have the probability of passing each course, and the probablity of passing at least one. Using joint probability, find A and B.

For C, wouldnt passing neither course be the probability of failing 1, then multiplied by the prob of failing the other?

## Similar Questions

1. ### stats again

ok I get it, so once I get the prob figred for one person, how do I figure it if additional attempts are made and the question is about the prob of at least one of the additional attempts say n = 6 getting the same results as the first …
2. ### Probability/Statistics

A quiz consists of 10 multiple-choice questions, each with 4 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 70 %. I'm not sure what to …
3. ### statistics

1. Use the following information about a group of college students: Fifty percent are taking Algebra. Sixty percent are taking Biology. Thirty percent are taking both Biology and Algebra. A student from the group is selected at random, …
4. ### math

Emily surmises that the probability that she will pass math or chemistry is .95, the probability of her passing math is .7, and the probability of passing both is .55. Find her estimate of the probability of passing chemistry?
5. ### statistics

Let x be the number of courses for which a randomly selected student at a certain university is registered. The probability distribution of x appears in the table shown below: x 1 2 3 4 5 6 7 p(x) .04 .05 .08 .26 .39 .16 .02 (a) What …
6. ### Probability

4.3. In a certain college town, 27.5 percent of the students failed Mathematics (Math), 19.8 percent failed Biology (Bio), and 11 percent failed both Math and Bio. A student is selected at random. Let A represent the event of failing …
7. ### Maths

The probability of passing geography in the examination is 7/10 and the probability of passing agriculture after one has passed geography is 5/7. The probability of passing agriculture after one failed geography is 1/6. Calculate the …
8. ### Math

An elementary school is offering 3 language classes: one in Spanish, one in French, and one in German. These classes are open to any of the 107 students in the school. There are 42 in the Spanish class, 32 in the French class, and …
9. ### Math

Jen figures she has a 70% chance of passing math and an 80% chance of passing history a) What is the probability that she passes math and history?
10. ### Probability

A student takes examination in four subjects A, B, C, D. His chance of passing in A is 4/5,in B is 3/4in C is 5/6 and in D is 2/3.To qualify he must pass in A and at least two other subjects. What is the probability that he qualifies?

More Similar Questions