If there are twelve multiple-choice questions on an exam, each having three possible answers, how many...
If there are
twelve
multiple-choice questions on an exam, each having
three
possible answers, how many different sequences of answers are there?
There are
different sequences of answers.
(Type a whole number.)
Business Statistics A First Course-7 Edition
Homework Answers
If there are
twelve
multiple-choice questions on an exam, each having
three
possible answers, how many different sequences of answers are there?
So,
Each question has 3 choices
3 * 3 * 3.....3
So,
3^12 sequences
Add Answer to:
If there are
twelve
multiple-choice questions on an exam, each having
three
possible answers, how many...
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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
Suppose you are taking a multiple choice exam with 65 questions, each with 4 possible answers....
Suppose you are taking a multiple choice exam with 65 questions, each with 4 possible answers. If you were to guess at random for each question, how many questions would you expect to get right? Your answer does not need to be an integer.
Suppose you are taking a multiple choice exam with 75 questions, each with 4 possible answers....
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onsider an exam which has n multiple choice questions. Each question has k possible answers, among...
onsider an exam which has n multiple choice questions. Each question has k possible answers, among which only one answer is correct. (a) Consider a student who chooses at random the answers for all questions of the exam. Let X be the number of correct answers of this student. What is distribution of X? What is the expected value of X? (b) To eliminate the effect of guessing, the instructor decides to mark the according to the following rule: for...
10 + Example 3: Multiple choice exam of multiple- choice questions, each with 5 possible answers....
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1. On a multiple choice exam with 4 possible answers for each of 7 questions, what the probability that a student will get 6 or more correct just by guessing randomly? (Hint: the student has an independent 1/4 chance of answering each individual question successfully.)
onsider an exam which has n multiple choice questions. Each question has k possible answers, among which only one answer is correct. (a) Consider a student who chooses at random the answers for all questions of the exam. Let X be the number of correct answers of this student. What is distribution of X? What is the expected value of X? (b) To eliminate the effect of guessing, the instructor decides to mark the according to the following rule: for...
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Problem 4 Midterm exam consists of three questions. There are four possible answers on each question, and of course only one of them is correct. Find distribution, expectation and variance of the number of correct answers with simple guessing.
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