Wednesday

April 1, 2015

April 1, 2015

Posted by **Jamal** on Tuesday, April 22, 2008 at 4:51pm.

- math -
**Reiny**, Tuesday, April 22, 2008 at 6:05pmprob of being right is 1/4

prob of guessing wrong is 3/4

so prob of guessing 70 out of 100 correct is

C(100,70)*(1/4)^70*(3/4)^30

= 3.763*10^-21

we are dealing with very large and very small numbers here, and I had to "trust" my calculator.

**Answer this Question**

**Related Questions**

math - A multiple-choice test has 10 questions. Each question has 5 choices. If ...

psychology statistics for behavioral sciences - A multiple-choice test has 48 ...

statistic - A multiple-choice test has 48 questions, each with four response ...

Stats - An instructor gives a test with 20 multiple choice questions. There are ...

Probability - Mary took a 20 question multiple-choice exam where there are 4 ...

Statistics - A multiple choice test has five choices. Therefore the probability ...

Math - A multiple choice quiz contains five question. Each question has four ...

statistic and probability - There are two independent multiple-choice quizzes ...

Statistics - On a very short quiz, there is one multiple choice question with 5 ...

Algebra 1 - On a multiple choice test with 10 questions and 5 choices, A,B,C,D,E...