High School

A student in his exam selects option C for all 10 multiple-choice questions. According to statistics, how many questions out of 10 will the student get right?

(Note: The exam consists of 10 MCQs. Each MCQ has 4 answer choices: A, B, C, and D. Only one choice is correct, and the other three are wrong.)

Answer :

Final answer:

In this probability-based scenario, if a student, at random, selects option 'C' for all 10 multiple-choice questions (MCQ), statistically, they are expected to get around 2 or 3 questions correct.

Explanation:

The subject of this problem is probability, a significant concept in mathematics dealing with the likelihood of events occurring. Given that each multiple-choice question (MCQ) has 4 possible answers (A, B, C, D), and only one of these options is correct, the success rate (probability of choosing correctly) for one randomly answered question is 1/4 or 0.25 (25%).

In this instance, if the student randomly guesses all questions as 'C,' the expected number of correct answers (given by multiplying the success rate by the number of attempts) is 0.25 (probability of success) * 10 (number of questions) = 2.5. So, statistically, we would expect the student to get around 2 or 3 questions correct on average.

However, it's imperative to realize that this is a statistical expectation and not a certainty. In reality, the student could score anywhere from 0 to 10 correct answers, but 2-3 is just the most statistically probable outcome.

Learn more about Probability here:

https://brainly.com/question/32117953

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