SOLUTION: Solve. There are 10 true/false questions on a test. You do not know the answer to 4 of the questions, so you guess. What is the probability that you will get all 4 answers right?

Algebra.Com
Question 862363: Solve.
There are 10 true/false questions on a test. You do not know the answer to 4 of the questions, so you guess. What is the probability that you will get all 4 answers right?

Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!

Hi
p = .5 and n = 4
P(4) = .5^4 = .0625 0r 6.25%
RELATED QUESTIONS

a true/false test has 10 questions each of which has 2 possible answers, only one of... (answered by ewatrrr)
If you have a true/false test with 4 questions on it if you guess what is the probability (answered by Susan-math)
a test consist of 10 true and false questions. To pass the test a student must answer at... (answered by edjones,ewatrrr)
A.How many different ways are there to answer a true/false test that has four questions? (answered by stanbon)
on a true/false test a student has no idea what the answers are to 3 of the questions so... (answered by funmath)
You take a test in which there are 157 points possible. The test consists of true/false... (answered by ikleyn)
If you guess at random on each question of a true-false test with 12 questions, what is... (answered by solver91311)
You sit down to take a true-or-false test with 5 questions. If you randomly guess on all... (answered by lynnlo)
There are 5 true and false questions on a test. How many different ways are there to... (answered by stanbon)