On a Multiple Choice Test with 15 Questions,each Question Has

question 1

Multiple Choice

On a multiple choice test with 15 questions,each question has four possible answers,one of which is correct.For students who guess at all answers,find the standard deviation of the number of correct answers.

• A)1.62
• B)1.643
• C)1.587
• D)1.875
• E)1.677

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