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
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
If there are twelve multiple-choice questions on an exam, each having three possible answers, how many...
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. 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.
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.)
A simple survey consists of three multiple choice questions. The first question has 5 possible answers, the second has 3 possible answers and the third has 4 possible answers. In how many different ways can you complete this survey? use counting rule method
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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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 _._ _ _ _ _ _)
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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Multiple-choice questions each have five possible answers (a, b, c, d, e), one of which is correct. Assume that you guess the answers to three such questions a. Use the multiplication rule to find P(WWC), where C denotes a correct answer and W denotes a wrong answer. P(WWC) (Type an exact answer.) b. Beginning with WWC, make a complete list of the different possible arrangements of one correct answer and two wrong answers, then find the probability for each entry in the...