Mathematics, 05.07.2020 14:01 abbyramirez52
Suppose you take a 30-question, multiple-choice test, in which each question contains 4 choices: A, B, C, and D. If you randomly guess on all 30 questions, what is the probability you pass the exam (correctly guess on 60% or more of the questions)? Assume none of the questions have more than one correct answer (hint: this assumption of only 1 correct choice out of 4 makes the distribution of X, the number of correct guesses, binomial). What is the expected number of correct guesses, from problem #19? What is the standard deviation, ? (Remember that X is a binomial random variable!) What would be considered an unusual number of correct guesses on the test mention in problem number 19 using ?
Answers: 3
Mathematics, 21.06.2019 20:30, gwendallinesikes
Is the point (0, 8) on the x-axis or y-axis? how do you know?
Answers: 2
Suppose you take a 30-question, multiple-choice test, in which each question contains 4 choices: A,...
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