A quiz consists of 6 multiple-choice questions. Each question has 4 possible answers. A student is...
A quiz consists of 6 multiple-choice questions. Each question has 4 possible answers. A student is unprepared, and he has no choice but to guess answers completely at random. He passes the quiz if he gets at least 3 questions correctly. What is the probability that he will pass?
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A quiz consists of 6 multiple-choice questions. Each question
has 4 possible answers. A student is...
a multiple choice quiz consists of 20 questions, each of which has five possible answers of...
a multiple choice quiz consists of 20 questions, each of which has five possible answers of which only one is correct. A student passes the quiz if twelve or more correct answers are obtained. what is the probability of passing the quiz if on each question, a student can eliminate two incorrect answers and then guess between the remaining three? (answer format _._ _ _ _ _ _)
A quiz consists of 10 multiple-choice questions. Each question has 5 possible answers, only one of...
A quiz consists of 10 multiple-choice questions. Each question has 5 possible answers, only one of which is correct. Pat plans to guess the answer to each question. Find the probability that Pat gets a. one answer correct. b. all 10 answers correct.
3. You are taking a multiple-choice quiz that consists of 6 questions. Each question has four...
3. You are taking a multiple-choice quiz that consists of 6 questions. Each question has four possible answers, only one of which is correct. To complete the quiz, you randomly guess the answer to each question. a) Find the chance of guessing exactly three answers correctly b) Find the chance of guessing more than four answers correctly
A test consists of 25 multiple choice questions. Each question has 5 possible answers, or which...
A test consists of 25 multiple choice questions. Each question has 5 possible answers, or which only one is correct. If a student guesses on each question, find the following. a) The probability that he will guess all of them correct b)The probability that he will guess at most 15 correct. c)The probability that he will guess at least one correct. d) The mean and the standard deviation of the number of correct answers. e)Estimate the probability of the number...
(5 points) A multiple-choice examination has 15 questions, each with 5 possible answers only one ...
(5 points) A multiple-choice examination has 15 questions, each with 5 possible answers only one of which is correct. Suppose that one of the students who takes the examination answers each of the questions with an independent random guess. What is the probability that the student answers at least four questions correctly? What is the expected number of questions that the student answers correctly? 4.
(5 points) A multiple-choice examination has 15 questions, each with 5 possible answers only one...
(1 point) A quiz consists of 10 multiple-choice questions, each with 4 possible answers. For someone...
(1 point) A quiz consists of 10 multiple-choice questions, each with 4 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 50 %. P(pass) = Use four decimals.
Question 1. A student is about to write his marketing quiz that consists of 10 multiple-choice...
Question 1. A student is about to write his marketing quiz that consists of 10 multiple-choice questions, each of which has five possible answers. Assume that each question has one correct answer. If he has done no studying and has no common sense regarding marketing, and thus has to guess the answer to each question, what is the probability that at least two of his answers are correct? a. 0.3758 b. 0.6242 c. 0.6778 d. 0.3222 e. 0.3785
5. A student takes a multiple-choice exam where each question has 5 possible answers. He works...
5. A student takes a multiple-choice exam where each question has 5 possible answers. He works a question correctly if he knows the answer, otherwise he guesses at random. Suppose he knows the answer to 80% of the questions. (a) What is the probability that on a question chosen at random the student gets the correct (b) Given that the student gets the correct answer to this question, what is the probability answer? that he actually knew the answer?
A multiple choice quiz has4 questions. Each question has 5 possible answers, only one of which...
A multiple choice quiz has4 questions. Each question has 5 possible answers, only one of which is correct. A student has not studied for the quiz and guesses randomly on each question. What is the probability that the student gets at least one correct answer? Show your calculation, and write your answer as either a reduced fraction or a decimal rounded to four places.
(1 point) A quiz consists of 20 multiple-choice questions, each with 5 possible answers. For someone...
(1 point) A quiz consists of 20 multiple-choice questions, each with 5 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 70 %. P(pass)= P ( pass ) =
3. You are taking a multiple-choice quiz that consists of 6 questions. Each question has four possible answers, only one of which is correct. To complete the quiz, you randomly guess the answer to each question. a) Find the chance of guessing exactly three answers correctly b) Find the chance of guessing more than four answers correctly
(5 points) A multiple-choice examination has 15 questions, each with 5 possible answers only one of which is correct. Suppose that one of the students who takes the examination answers each of the questions with an independent random guess. What is the probability that the student answers at least four questions correctly? What is the expected number of questions that the student answers correctly? 4.
(5 points) A multiple-choice examination has 15 questions, each with 5 possible answers only one...
(1 point) A quiz consists of 10 multiple-choice questions, each with 4 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 50 %. P(pass) = Use four decimals.
5. A student takes a multiple-choice exam where each question has 5 possible answers. He works a question correctly if he knows the answer, otherwise he guesses at random. Suppose he knows the answer to 80% of the questions. (a) What is the probability that on a question chosen at random the student gets the correct (b) Given that the student gets the correct answer to this question, what is the probability answer? that he actually knew the answer?
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