Question

A problem on a multiple-choice quiz is answered correctly with probability 0.95 if a student is...

A problem on a multiple-choice quiz is answered correctly with probability 0.95 if a student is prepared. An unprepared student guesses between 5 possible answers, so the probability of choosing the right answer is 1/5. Seventy-five percent of students prepare for the quiz. If Mr. X gives a correct answer to this problem, what is the chance that he did not prepare for the quiz?

Homework Answers

Answer #1

Therefore, if Mr. X give the correct answer to this problem, the chance that he did not prepare for the quiz is 6.56%

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A problem on a multiple-choice quiz is answered correctly with probability 0.95 if a student is...
A problem on a multiple-choice quiz is answered correctly with probability 0.95 if a student is prepared. An unprepared student guesses between 5 possible answers, so the probability of choosing the right answer is 1/5. Seventy-five percent of students prepare for the quiz. If Mr. X gives a correct answer to this problem, what is the chance that he did not prepare for the quiz?
A quiz consists of 15 multiple-choice questions. Each question has 5 choices, with exactly one correct...
A quiz consists of 15 multiple-choice questions. Each question has 5 choices, with exactly one correct choice. A student, totally unprepared for the quiz, guesses on each of the 15 questions. a. How many questions should the student expect to answer correctly? b. What is the standard deviation of the number of questions answered correctly? c. If at least 7 questions must be answered correctly to pass the quiz, what is the chance the student passes?
A student takes random guesses at each problem on a 15-problem quiz. Each problem is a...
A student takes random guesses at each problem on a 15-problem quiz. Each problem is a multiple choice question with 5 possible solutions. What is the probability that the student gets a B (80.0% - 89.5%) on the quiz?
A quick quiz consists of a multiple-choice question with 6 possible answers followed by a multiple-choice...
A quick quiz consists of a multiple-choice question with 6 possible answers followed by a multiple-choice question with 5 possible answers. If both questions are answered with random guesses, find the probability that both responses are correct.
. In a history class, Colin and Diana both write a multiple choice quiz. There are...
. In a history class, Colin and Diana both write a multiple choice quiz. There are 10 questions. Each question has five possible answers. What is the probability that Passing is considered 70% a) Colin will pass the test if he guesses an answer to each question. b) Diana will pass the test if she studies so that she has a 75% chance of answering each question correctly.
A student is taking a multiple-choice quiz in which each question has five possible answers, exactly...
A student is taking a multiple-choice quiz in which each question has five possible answers, exactly one of which is correct. He knows 85% of the material being tested. Assume the teacher has chosen the questions independently and at random from among all the questions she could have chosen. When the student knows the correct answer to a given question, he has a 98% chance of marking it correctly. When he does not know the answer, he answers by marking...
A student answers a multiple choice question with ? choices in the following manner: The probability...
A student answers a multiple choice question with ? choices in the following manner: The probability that the student studied the specific subject is ?, thus, he knows the answer. Otherwise, he guesses. a) What is the probability that the student studied a subject given that he answered correctly? b) Calculate this probability for the cases ? = 1 and ? → ∞. Explain the results.
A student randomly guesses at 5 multiple choice questions. Find the probability that the student guesses...
A student randomly guesses at 5 multiple choice questions. Find the probability that the student guesses 3 or more correctly. Each question has 8 possible answers with only one correct answer, and each question is independent of every other question. (Round to the nearest ten thousandths. I.e. 4 decimal places. Use the Binomial)
An unprepared student must take a 7 question multiple choice test that has 5 possible answers...
An unprepared student must take a 7 question multiple choice test that has 5 possible answers per question. If the student guesses on the first question, what's the probability that they will answer that question incorrectly? How do you solve?
A quiz for a Psychology class consists of 5 questions. The questions are multiple-choice with 4...
A quiz for a Psychology class consists of 5 questions. The questions are multiple-choice with 4 possible answers each, with only one correct answer. A student randomly guesses on all 5 questions. create a probability distribution for the number of correct answers what is the probability that the student will pass with a 60% or better what is the probability that the student will answer less than 4 correct