A quiz consists of 50 multiple choice questions, each with five possible answers, only one of which is correct. If a student guesses on each question, what is the mean and standard deviation of the number of correct answers? Round to the nearest thousandth. O A. The mean is 10. The standard deviation is 2.828. O B. The mean is 10. The standard deviation is 3.162. O C. The mean is 25. The standard deviation is 2.828. O D. The mean is 25. The standard deviation is 5.

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A: Given data ,Mean u=300S.D σ=20

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A: Given,standard deviation (σ)=16margin of error (E)=2α=1-0.88=0.12α2=0.06Z0.06 =1.5548

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Q: Which of the following four standard deviation values would produce the more platykurtic…

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Q: The standard deviation of the given the data {14, 13, 16, 9, 3} is +

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