Several anthropology students are unprepared for a surprise true/false test with 17 questions, and all of their answers are guesses. Find the mean for the number of correct answers for such students....

How do I find the usual number of correct answers?

Extracted text: Several anthropology students are unprepared for a surprise true/false test with 17 questions, and all of their answers are guesses. Find the mean for the number of correct answers for such students. (Round answer to one decimal place.) µ = 8.5 Find the standard deviation for the number of correct answers for such students. (Round answer to two decimal places.) o = 2.06 Give the range for the usual number of correct answers. (Enter answer as an interval using square-brackets only with whole numbers.) usual values = Would it be unusual for a student to pass by guessing and getting at least 11 correct answers? no, it would not be unusual yes, it would be unusual