Aquiz consists of 6 multiple choice questions. each question has 4 possible answers. a student is unprepared and guess answers by random. he passes if he gets atleast 3 questions right. what is the probability that he will pass

16.94% probability that he will pass

Step-by-step explanation:

For each question there are only two possible outcomes. Either the answer it correctly, or he does not. The probability of answering a question correctly is independent of other questions. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.

6 questions

So n = 6.

4 possible answers

So

He passes if he gets atleast 3 questions right.what is the probability that he will pass

16.94% probability that he will pass

step-by-step explanation:

subtract 7, so the answer is x < = 3, or c.

a. 19,958,400

step-by-step explanation:

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