Suppose you gave a multiple-choice exam with 16 questions on it. Each question has 4 alternatives....
Suppose you gave a multiple-choice exam with 16 questions on it. Each question has 4 alternatives. What is the probability that a student who guesses at random on each of the 16 questions will score 6 or more correct answers? Assume that each alternative to each question is equally likely to be chosen. A. P=0.9999 B. P=0.8770 C. P=0.0123 D. P<0.001 Please help and show work. Thank you.
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Suppose you gave a multiple-choice exam with 16 questions on it.
Each question has 4 alternatives....
There are five multiple choice questions on an exam, each having responses a, b, c, and...
There are five multiple choice questions on an exam, each having responses a, b, c, and d. Each question is worth 5 points, and only one option per question is correct. Suppose the student guesses the answer to cach question, and these guesses, from question to question, are independent. If the student needs at least 20 points to pass the test, the probability that the student passes is closest to: O 0.0146 O 0.0156 0.001
Question 1 5 pts A multiple choice exam has 85 questions on it (4 choices each...
Question 1 5 pts A multiple choice exam has 85 questions on it (4 choices each question) What is the probability of getting 28 questions right on such an exam? Round your answer to four decimal places Question 2 5 pts A multiple choice exam has 94 questions on it (5 choices each question) What is the probability of getting 19 questions right on such an exam? Round your answer to four decimal places Question 3 5 pts Suppose Bobby...
5. A student takes a multiple-choice exam where each question has 5 possible answers. He works...
5. A student takes a multiple-choice exam where each question has 5 possible answers. He works a question correctly if he knows the answer, otherwise he guesses at random. Suppose he knows the answer to 80% of the questions. (a) What is the probability that on a question chosen at random the student gets the correct (b) Given that the student gets the correct answer to this question, what is the probability answer? that he actually knew the answer?
3. [10 Points! Consider an exam with multiple choice questions. Assume that each question has three...
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?...
Multiple-Choice Exam A student takes a 13-question, multiple-choice exam with two choices for each question and...
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
3. [10 Points) Consider an exam with 28 multiple choice questions. Assume that each question has...
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. Each question has 5 choices. If...
A student takes an exam containing 10 multiple choice questions. Each question has 5 choices. If the student guesses, what is the probability that he will get less than 7 but more than 5 questions right? Round your answer to four decimal places.
An exam consists of 64 independent multiple-choice questions. For each question, there are five choices, with...
An exam consists of 64 independent multiple-choice questions. For each question, there are five choices, with only one being correct. Suppose a student randomly guesses the correct answer to each question. (a) What are the mean and standard deviation of the number of successful guesses? (b) Use the normal approximation to find the probability that the student will correctly guess at most 10 correct answers.
A student takes an exam containing 12 multiple choice questions. Each question has 5 choices. At...
A student takes an exam containing 12 multiple choice questions. Each question has 5 choices. At least 8 correct answers are required to pass. If the student guesses, what is the probability that he will pass? Round your answer to four decimal places.
r=3 QUESTION 16 5 poin Suppose a multiple choice exam has 47 questions with 7 answer...
r=3 QUESTION 16 5 poin Suppose a multiple choice exam has 47 questions with 7 answer choices per question, only one of which is correct. Suppose a student randomly guesses on every question of the exam, and let X be the number of correct answers out of the total number of questions. What is E(X), that is, the expected number of correct answers, if we assume X has a binomial distribution, to one decimal place?
There are five multiple choice questions on an exam, each having responses a, b, c, and d. Each question is worth 5 points, and only one option per question is correct. Suppose the student guesses the answer to cach question, and these guesses, from question to question, are independent. If the student needs at least 20 points to pass the test, the probability that the student passes is closest to: O 0.0146 O 0.0156 0.001
Question 1 5 pts A multiple choice exam has 85 questions on it (4 choices each question) What is the probability of getting 28 questions right on such an exam? Round your answer to four decimal places Question 2 5 pts A multiple choice exam has 94 questions on it (5 choices each question) What is the probability of getting 19 questions right on such an exam? Round your answer to four decimal places Question 3 5 pts Suppose Bobby...
5. A student takes a multiple-choice exam where each question has 5 possible answers. He works a question correctly if he knows the answer, otherwise he guesses at random. Suppose he knows the answer to 80% of the questions. (a) What is the probability that on a question chosen at random the student gets the correct (b) Given that the student gets the correct answer to this question, what is the probability answer? that he actually knew the answer?
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?...
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
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...
An exam consists of 64 independent multiple-choice questions. For each question, there are five choices, with only one being correct. Suppose a student randomly guesses the correct answer to each question. (a) What are the mean and standard deviation of the number of successful guesses? (b) Use the normal approximation to find the probability that the student will correctly guess at most 10 correct answers.
r=3 QUESTION 16 5 poin Suppose a multiple choice exam has 47 questions with 7 answer choices per question, only one of which is correct. Suppose a student randomly guesses on every question of the exam, and let X be the number of correct answers out of the total number of questions. What is E(X), that is, the expected number of correct answers, if we assume X has a binomial distribution, to one decimal place?
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