Mathematics
Mathematics, 24.08.2019 23:30, ThePotato381

If we just randomly guess (without any knowledge) on each of the 4 questions, what is the expected number of questions we get correct

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Mathematics, 23.07.2019 17:00, elisabethCuc
"a test has 5 multiple choice questions with four choices with one correct answer each. if we just randomly guess on each of the 5 questions, what is the probability that you get at least 1 questions correct? "
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Mathematics, 25.09.2019 09:30, justiceisbae1
You randomly guess the answers to two questions on a multiple-choice test. each question has three choices: a, b, and c. what is the probability that you guess the correct answers to both questions?
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Mathematics, 07.11.2019 20:31, acina
Astudent is taking a multiple-choice exam in which each question has four choices. assume that the student has no knowledge of the correct answers to any of the questions. she has decided on a strategy in which she will place four balls (marked a,b,c, and d) into a box. she randomly selects one ball for each question and replaces the ball in the box. the marking on the ball will determine her answer to the question. there are five multiple-choice questions on the exam. what is the probability that she will get a. five quesions correct? b. at least four questions correct? c. no questions correct? d. no more than two questions correct?
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