SOLUTION: Several students are unprepared for a true/false test with 50 questions, and all of their answers are guesses. Find the mean, variance and standard deviation for the number of cor
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Question 60217: Several students are unprepared for a true/false test with 50 questions, and all of their answers are guesses. Find the mean, variance and standard deviation for the number of correct answers for such students. For mean and variance give 1 decimal place of precision, for standard deviation give 2. give the values, separated by commas, with 1 blank character between a comma and subsequent value. Answer by stanbon(75887) (Show Source):
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