Posted by **jeanette** on Saturday, March 31, 2012 at 7:13pm.

a student randomly guesses at five multiple-choice questions, each question has five possible choices (suppose the choice for each question is independent): a) Find the probability that the student gets exactly three correct. b) What is the probability that the student gets all correct? c) What is the expected number of correct questions? d) Find the probability that the student gets at least the expected number of correct questions ?

## Answer this Question

## Related Questions

- advanced statistics - suppose a student takes a multiple choice test with 10 ...
- Stats - A student takes a 32 question multiple choice exam but did not study and...
- Statistics - A student is taking a multiple-choice exam with 16 questions. Each ...
- math - A multiple-choice test has 10 questions. Each question has 5 choices. If ...
- Statistics - A student guesses blindly on a 20-question multiple choice test. If...
- Math - 10 multiple choice questions each with three possible answers only one of...
- Statistics - A student makes random guesses on 6 multiple-choice questions. One ...
- statistics - A multiple choice test has 20 questions with each having 4 possible...
- statistics - A multiple choice exam has 20 questions; there are four choices for...
- stats - A multiple choice test consists of four questions. Each question has ...

More Related Questions