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anonymous
 one year ago
A multiple choice quiz has five questions. Each question has four answer choices. If you guess every answer, what is the probability of getting at least three correct?
anonymous
 one year ago
A multiple choice quiz has five questions. Each question has four answer choices. If you guess every answer, what is the probability of getting at least three correct?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well, to start you would want to find the fractions of each probability

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Each question has four answers, so 1/4, times the amount of questions 1/5 gives you 1/20

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so the probability would be 1/20 or 5% ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0not quite, we have to figure out the probability for getting at least 3 questions out of 5 right

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so you need at least three right, so (1/5)3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you would do 1/4 * 1/4 * 1/4 * 1/4 * 1/4

anonymous
 one year ago
Best ResponseYou've already chosen the best response.09.765 E^4 that what i got

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is there another step or something?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0nope, im pretty sure thats the answer, but check it just to make sure.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i the 9.765 E^4 a probability ?
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