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Compute the Mean and Standard Deviation of a Binomial Random

Question 52

Multiple Choice

Compute the Mean and Standard Deviation of a Binomial Random Variable
-A quiz consists of 20 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean and the standard deviation of the number of correct answers.


A) mean: 4; standard deviation: 1.78885438
B) mean: 4; standard deviation: 2
C) mean: 10; standard deviation: 1.78885438
D) mean: 10; standard deviation: 3.16227766

Correct Answer:

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