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Mars2501 [29]
3 years ago
6

Multiple-choice questions have a special grading rule determined by your instructor. Assume that your instructor has decided to

grade these questions in the following way: If you submit an incorrect answer to a multiple-choice question with n options, you will lose 1/(n−1) of the credit for that question. Just like the similar multiple-choice penalty on most standardized tests, this rule is necessary to prevent random guessing.If a multiple-choice question has five answer choices and you submit one wrong answer before getting the question correct, how much credit will you lose for that part of the question?
Mathematics
2 answers:
Daniel [21]3 years ago
6 0

Answer:

  1/4 of the credit

Step-by-step explanation:

The problem statement tells you n=5. Putting that into the expression for lost credit, you get ...

  1/(5-1) = 1/4

of the credit is lost for a question with 1 wrong answer.

You will lose 1/4 of the credit.

Reika [66]3 years ago
5 0

Answer:

The credit will you lose for the part of question is 1/4 or 25%.

Step-by-step explanation:

Consider the provided information.

It is given that, if you submit an incorrect answer to a multiple-choice question with n options, you will lose 1/(n−1) of the credit for that question.

Suppose the given multiple choice question has 5 answer. So for one wrong answer the loss will be:

Substitute the value of n=5 in above formula.

\frac{1}{n-1} \\\frac{1}{5-1} \\\frac{1}{4}=0.25

That means you will lose 1/4 or 0.25credit.

Now convert it into %.

\frac{1}{4}\times 100=25\%

Hence, the credit will you lose for the part of question is 1/4 or 25%.

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Answer:

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Step-by-step explanation:

<u>We know that:</u>

  • 3 days of practice = Monday + Tuesday + Wednesday
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<u>Solution:</u>

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[Simplifying]

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[Final Answer]

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Hence, the total number of minutes she practiced over the course of the three days is 7m minutes.

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