Posted by **m** on Monday, February 10, 2014 at 11:50am.

A multiple choice exam has 20 questions; there are four choices for each question.

A student guesses the answer to every question. Find the chance that he guesses correctly between four and seven times.

Find the minimum score the instructor can set so that the probability that a student will pass just by guessing is 20% or less.

## Answer this Question

## Related Questions

- 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 ...
- Statistics - A student guesses blindly on a 20-question multiple choice test. If...
- Statistics - A student makes random guesses on 6 multiple-choice questions. One ...
- Binomial Distribution - A biology quiz consists of twelve multiple-choice ...
- Finite Math - A biology quiz consists of 10 multiple -choice questions. 7 must ...
- Statistics - Astudent makes random guesses on 6 multiple-choice questions. One ...
- Math - A multiple - choice quiz contains 5 questions with 4 choices for each ...
- Statistics - Richard has been given a 5-question multiple-choice quiz in his ...
- Math (statistics) - In an examination a candidate is given the four answers to ...

More Related Questions