SOLUTION: hey i will really really appreciate it if you could help me with this probability distribution question: On a multiple-choice test of 10 questions, each question has 5 possibl

Algebra ->  Test -> SOLUTION: hey i will really really appreciate it if you could help me with this probability distribution question: On a multiple-choice test of 10 questions, each question has 5 possibl      Log On


   



Question 157857: hey i will really really appreciate it if you could help me with this probability distribution question:

On a multiple-choice test of 10 questions, each question has 5 possible answers. A student is certain of the answers to 4 questions but is totally baffled by 6 questions. If the student randomly guesses the answers to those 6 questions, what is the probability that the student will get a score of 5 or more on the test? Express your answer correct to two decimal places.

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
What is the probability that he gets none of the 6 correct?
(4/5)^6=.262144
1-.262144=.737856 chance he gets one correct.
.74 correct to 2 decimal places.
.
Ed