In a statistics quiz with 10 multiple choice questions, if the probability of correctly guessing the...
Suppose a quiz has 12 multiple choice questions. Each question has 4 answer choices. If a student takes the quiz and randomly guesses on every question.... Find the probability the student gets between 1 and 6, exclusive, questions correct? Find the probability the student gets more than 8 questions correct?
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
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
3. [10 Points! Consider an exam with multiple choice questions. Assume that each question has three solution choices but only one of them is correct. A student who didn't study for the exam is going to make a guess. 3. What is the probability that he guesses only 15 questions correctly What is the probability that he guesses at least 15 questions correctly c. What is the probability that he guesses more than 10 and less than 15 questions correctly?...
3. [10 Points) Consider an exam with 28 multiple choice questions. Assume that each question has three solution choices but only one of them is correct. A student who didn't study for the exam is going to make a guess. a. What is the probability that he guesses only 15 questions correctly? b. What is the probability that he guesses at least 15 questions correctly? c. What is the probability that he guesses more than 10 and less than 15...
A student takes an exam containing 10 multiple-choice questions. The probability of choosing a correct answer by knowledgeable guessing is 0.5. At least 6 correct answers are required to pass. If the student makes knowledgeable guesses, what is the probability that he will fail? Round your answer to four decimal places.
. There are n questions on a multiple choice exam, and for each question, there are four choices. To pass the exam, one must correctly answer at least 70% of the questions. The student has not studied, so he/she has to resort to guessing on every question. a. Find the probability of the student passing for n = 10. b. Find the expected number of questions answered correctly for n = 20. c. Find the variance for the number of...
Multiple-Choice Exam A student takes a 13-question, multiple-choice exam with two choices for each question and guesses on each question. Find the probability of guessing at least 9 out of 13 correctly. Assume the variable is binomial. Round the intermediate and final answers to three decimal places. P (guessing at least 9 out of 13 correctly) = x
A student takes an exam containing 14 multiple choice questions. The probability of choosing a correct answer by knowledgeable guessing is 0.5. If the student makes knowledgeable guesses, what is the probability that he will get exactly 3 questions right? Round your answer to four decimal places
A student takes an exam containing 19 multiple choice questions. The probability of choosing a correct answer by knowledgeable guessing is 0.4. If the student makes knowledgeable guesses, what is the probability that he will get exactly 5 questions right? Round your answer to four decimal places.