Mathematics, 09.06.2020 23:57 wvtoy4767

A student takes a 10-question, multiple-choice exam with possible answers as a, b, c, and d for each question and guesses on each question.
(a) Find the probability of guessing 9 out of the 10 correctly. (10-pt)
(b) Find the mean (4-pt)
(c) Find the variance (4-pt)
(d) Find the standard deviation

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More questions: Mathematics Another questions

A student takes a 10-question, multiple-choice exam with possible answers as a, b, c, and d for each question and guesses on each question. (a) Find the probability of guessing 9 out of the 10 correctly. (10-pt) (b) Find the mean (4-pt) (c) Find the variance (4-pt) (d) Find the standard deviation

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Another question on Mathematics

A student takes a 10-question, multiple-choice exam with possible answers as a, b, c, and d for each question and guesses on each question.
(a) Find the probability of guessing 9 out of the 10 correctly. (10-pt)
(b) Find the mean (4-pt)
(c) Find the variance (4-pt)
(d) Find the standard deviation