A test has 5 multiple choice questions with four choices with one correct answer each
QUESTION 11
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?
The probability a certain virus infects a random person is 0.2. If a random sample of 12 people is taken, what is the probability that exactly 5 people are infected?
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A test has 5 multiple choice questions with four choices with one correct answer each
A multiple choice test has 25 questions, each with 5 possible choices, exactly one of which...
A multiple choice test has 25 questions, each with 5 possible choices, exactly one of which is correct. The test is marked by giving four points to each correct choice, and subtracting one point for each incorrect choice. No points are either given or subtracted for questions for which no choice is selected. Mickey, Bianca, and Gerry each know the answer to 12 of the 25 questions, but are unsure about the rest. Mickey leaves the other 13 unanswered, whereas...
Sam takes a multiple choice test with two questions and four possible answers to each (A,...
Sam takes a multiple choice test with two questions and four possible answers to each (A, B, C, D), of which only one is correct. He didn’t study so doesn’t know the material at all. As a result, he randomly chooses his answer to each question.: a. Thinking of his two choices as the random outcomes of interest, what is the sample space? (2 marks) b. What is the probability that he will get at least one question correct? (2...
A multiple choice test consists of 10 questions each with four choices (a,b,c,d) for each question....
A multiple choice test consists of 10 questions each with four choices (a,b,c,d) for each question. If a student must get at least 7 correct to pass the test, what is the probability that a student could pass the exam simply by guessing? Find your answer to 4 decimal places.
2. Suppose you take a multiple choice test with 10 questions, and each question has 5...
2. Suppose you take a multiple choice test with 10 questions, and each question has 5 answer choices (a. (10 points) b, c.d, e). What is the probability you get exactly 4 questions correct just by guessing? on)
HW4.5. Multiple-choice Test A multiple-choice test has 43 questions. Each question has 4 choices. If you...
HW4.5. Multiple-choice Test A multiple-choice test has 43 questions. Each question has 4 choices. If you guess at random on all the questions and each guess is independent from one another, what are the expected value and standard deviation of the number of correct answers on your test? 1. What is the expected value of the number of correct answers on your test? (a) 10.75 (b) 21.5 (c) 8.75 (d) 11.75 2. What is standard deviation of the number of...
(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...
A student is taking a multiple-choice exam in which each question has four choices. Assuming that...
A student is taking a multiple-choice exam in which each question has four choices. Assuming that she 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...
A student is taking a multiple-choice exam in which each question has four choices. Assume that...
A student 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...
A Math teacher gives a test with 5 multiple choice questions. Each question has 4 possible...
A Math teacher gives a test with 5 multiple choice questions. Each question has 4 possible answers. You randomly guess the answers. Let X be the random variable defined to be the number of correct answers out of 5 test questions. a)What probability distribution should you use to model the probabilities of this random variable. Explain and state the formula in terms of x only. b)Create a probability distribution table for random variable X c) Determine the probability you will...
Smith and Jones each write the same multiple choice test. The test has 5 questions, and...
Smith and Jones each write the same multiple choice test. The test has 5 questions, and each question has 5 answers (exactly one of which is right). Smith and Jones are not very well prepared for the test and they answer the questions randomly. (i) FInd the probability that they both get the same number of answers correct. (ANSWER: 0.3198) (ii) Find the probability that their papers are identical, assuming that they have answered independently of one another. (ANSWER: 0.00032)
A multiple choice test has 25 questions, each with 5 possible choices, exactly one of which is correct. The test is marked by giving four points to each correct choice, and subtracting one point for each incorrect choice. No points are either given or subtracted for questions for which no choice is selected. Mickey, Bianca, and Gerry each know the answer to 12 of the 25 questions, but are unsure about the rest. Mickey leaves the other 13 unanswered, whereas...
2. Suppose you take a multiple choice test with 10 questions, and each question has 5 answer choices (a. (10 points) b, c.d, e). What is the probability you get exactly 4 questions correct just by guessing? on)
HW4.5. Multiple-choice Test A multiple-choice test has 43 questions. Each question has 4 choices. If you guess at random on all the questions and each guess is independent from one another, what are the expected value and standard deviation of the number of correct answers on your test? 1. What is the expected value of the number of correct answers on your test? (a) 10.75 (b) 21.5 (c) 8.75 (d) 11.75 2. What is standard deviation of the number of...
(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...
A student is taking a multiple-choice exam in which each question has four choices. Assuming that she 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...
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