A 20 question multiple choice test with 5 possible answers on each question is given to a class and the instructor has promised that any student who gets more than half of the questions correct will pass the test. A student who has not attended the class nor read any of the assignments is hoping to pass the test purely on the basis of guesswork. What is the probability that the student will pass? (Hint: The probability that a guess will be correct on a multiple choice test with 5 possible answers is p = 0.2.)
A 20 question multiple choice test with 5 possible answers on each question is given to...
Consider a multiple-choice examination with 50 questions. Each question has four possible answers. Assume that a student who has done the homework and attended lectures has a 75% probability of answering any question correctly. A student must answer 43 or more questions correctly to obtain a grade What percentage of the students who have done their homework and attended lectures will obtain a grade A on this multiple-choice examination? A student who answers 35 to 39 questions correctly will receive...
Consider a multiple-choice examination with 50 questions. Each question has four possible answers. Assume that a student who has done the homework and attended lectures has a 65% chance of answering any question correctly. (Round your answers to two decimal places.) (a) A student must answer 43 or more questions correctly to obtain a grade of A. What percentage of the students who have done their homework and attended lectures will obtain a grade of A on this multiple-choice examination?...
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...
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?
Steve is a student in a statistics course. He is not a good student. A multiple-choice test is coming up and he will just rely on luck to pass the test. There are 10 multiple-choice questions on the test, with 5 possible answers given for each question, one of them being the correct one. Steve is going to guess the answer to each question. What is the probability that Steve gets no answers correct? What is the probability that Steve...
On a multiple choice test, each question has 3 possible answers. If you make a random guess on the first question, what is the probability that you are correct?
A student answers all 48 questions on a multiple-choice test by guessing. Each question has four possible answers, only one of which is correct. Approximate the probability that the student gets at least 22 correct answers by using the normal distribution. The probability is:
5) A student takes a multiple choice test with 12 questions, Each question has 4 possible answers only one of which is correct. .If this student guesses on all of the questions what is the probability he gets exactly three correct answers? A) 0.1974 C) 0.2323 B) 0.2825 D) 0.2581 E) 0.1105
(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 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.