An economic quiz contains five multiple choice questions. Let x represent the number of questions a...
This question has two parts. Part 1) The following question scenario covers the next question as well. An economics quiz contains eleven multiple-choice questions. Let x represent the number of questions a student answers correctly. Is x a discrete or continuous random variable? Part 2) An economics quiz contains eleven multiple-choice questions. Let x represent the number of questions a student answers correctly. What are the possible values of x? 9, 8, 15, 0, 3, 12, 1, 5, 13, 2,...
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 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?
A short quiz has two true-false questions and one multiple-choice question with four possible answers. A student guesses at each question. Assuming the choices are all equally likely and the questions are independent of each other, the following is the probability distribution of the number of answers guessed correctly. What is the Probability of getting less than all three right? X 0 1 2 3 P(X) .1875 .4375 .3125 .0625 Group of answer choices a) 1.0000 b) .9375 c) .6250 d) .3125
A student takes a multiple choice test that has 8 questions. Each question has five choices. The student guesses randomly at each answer. Let X be the number of questions answered correctly. a) P(3) = ? b) P(More than 2) =
A quiz consists of 10 multiple choice questions, each with four possible answers, one of which is correct. To pass the quiz a student must get 70% or better on the quiz. If a student randomly guesses, what is the probability that the student will pass the quiz?
In a statistics quiz with 10 multiple choice questions, if the probability of correctly guessing the answer to a question is 0.35. What is the probability that: a. A student correctly guesses more than 7 questions? b. What is the variance Question (c) For this Question, assume a Poisson distribution. If the average number of auto accidents that occur in a given intersection is 5 per year. What is the probability that more than 12 accidents occurs in the same...
a. Ms. Newell gave her class a 10-question multiple-choice quiz with 4 choices. Let X = the number of questions that a randomly selected student in the class answered correctly. The mean and standard deviation of X are 7.6 and 1.32 respectively. To determine each student’s grade on the quiz, Ms. Newell will multiply his or her number of correct answers by 10. Let RV ‘G’ be the grade of a randomly chosen student in the class. i. Calculate the...
(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 Statistics quiz consists of twelve multiple- choice questions, each with four possible answers. For a student who makes random guesses for all the answers, find the probability of getting at least one question correct