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Find the mean for the number of correct answers

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Several anthropology students are unprepared for a surprise true false (50%/50% chance) test with 14 questions and all the answers are guesses.

Find the mean for the number of correct answers for such students round answer to one decimal place

Find the standard deviation for the number of correct answer for such students round to two decimal places

Give the range for the usual number of correct answers (inner answer as an interval using square brackets only with whole numbers)

Would it be unusual for a student to pass by guessing and getting at least nine correct answers?

Reference no: EM132857867

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