SOLUTION: a student takes a 10 question mutiple choice quiz with 5 choices for each question, find the probility of guessing at least 7 correct out of 10
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Question 168946: a student takes a 10 question mutiple choice quiz with 5 choices for each question, find the probility of guessing at least 7 correct out of 10
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The student has a 1/5 chance of getting any certain question right
The sudent wants to repeat this lucky guess 7 times
This is like rolling a 5-sided dice 7 times and getting the same
number each time
The probability is
That's my guess, but I'm often wrong on probability
questions, so get another opinion
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