Bonus points will be give to the entire class if at least 7 of the 12 questions are answered correctly. Assume that the...
Bonus points will be give to the entire class if at least 7 of the 12 questions are answered correctly. Assume that the probability that each question is answered correctly remains unchanged at 80%.
What is the probability the class gets bonus points? (use 4 decimals)
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Bonus points will be give to the entire class if at least 7 of the 12 questions are answered correctly. Assume that the...
Bonus points will be give to the entire class if at least 7 of the 12...
Bonus points will be give to the entire class if at least 7 of the 12 questions are answered correctly. Assume that the probability that each question is answered correctly remains unchanged at 80%. What is the probability the class gets bonus points? (use 4 decimals)
Question 7 (4 points) A student takes a multiple choice test consisting of 5 questions where...
Question 7 (4 points) A student takes a multiple choice test consisting of 5 questions where there are 4 choices per question. Also, each question is worth 20 points. Suppose the student guesses on each question. Let X be the number of questions the student gets correct. The probability distribution for X is given below. Find the probability that the student gets at least a 60 on the test. Give your answer to four decimal places. x10 11 12 13...
4. (30 points) A statistics exam has five easy questions and three hard questions. You have...
4. (30 points) A statistics exam has five easy questions and three hard questions. You have six friends who are in the class, five are moderately prepared and one is very prepared. Probability Easy Questions Correct 80% Chance 95% Probability Hard Questions Correct 66.666% (two-thirds) 5 Moderately Prepared Friends 1 Very Prepared Friend 80% The probability of answering any one question correctly is completely independent of the probability of answering any other question correctly for every student. (a) What is...
A quiz in Microeconomics has 40 multiple answer questions and each of them has 4 possible...
A quiz in Microeconomics has 40 multiple answer questions and each of them has 4 possible answers, but only one of them is correct. For every correctly answered question a student gets 15 points and for every incorrectly answered she loses 5 points. What is the probability of passing the quiz (the minimum required is 120 points) if a student is randomly picking the answers? (hint: you may use a normal approximation)
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?...
Imagine, just imagine, I am in the mood to give away 7 extra credit points among...
Imagine, just imagine, I am in the mood to give away 7 extra credit points among my (only) 4 students. If all students have the same opportunity to get any of the points, what is the probability that each student gets at least one extra point?
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 a true-false test consisting of 15 questions. Assume that the student guesses at...
A student takes a true-false test consisting of 15 questions. Assume that the student guesses at each question and find the probability that a. the student gets at least one question correct. b. the student gets a 80 % or better on the exam.
Richard has been given a 12-question multiple-choice quiz in his history class. Each question has four...
Richard has been given a 12-question multiple-choice quiz in his
history class. Each question has four answers, of which only one is
correct. Since Richard has not attended the class recently, he
doesn’t know any of the answers. The success occurs if Richard
answers a question correctly and the failure occurs if Richard is
unable to answer a question correctly. Assuming that Richard
guesses on all 12 questions, find the probability that he will
answer no more than 3 questions...
QUESTION 12 2 points Save Answer In a baseball game, the probability that Peter gets on...
QUESTION 12 2 points Save Answer In a baseball game, the probability that Peter gets on base safely isIf he comes to bat four times, what is the probabilitv that he will get on base safely at least three times? * Use the equation editor to enter your answer as a fraction Pann p words:0 ▲ QUESTION 13 2 points Save Answer Determine the probability of landing on tails at most 33 times if you flip a fair coin 80...
Question 7 (4 points) A student takes a multiple choice test consisting of 5 questions where there are 4 choices per question. Also, each question is worth 20 points. Suppose the student guesses on each question. Let X be the number of questions the student gets correct. The probability distribution for X is given below. Find the probability that the student gets at least a 60 on the test. Give your answer to four decimal places. x10 11 12 13...
4. (30 points) A statistics exam has five easy questions and three hard questions. You have six friends who are in the class, five are moderately prepared and one is very prepared. Probability Easy Questions Correct 80% Chance 95% Probability Hard Questions Correct 66.666% (two-thirds) 5 Moderately Prepared Friends 1 Very Prepared Friend 80% The probability of answering any one question correctly is completely independent of the probability of answering any other question correctly for every student. (a) What is...
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...
Richard has been given a 12-question multiple-choice quiz in his
history class. Each question has four answers, of which only one is
correct. Since Richard has not attended the class recently, he
doesn’t know any of the answers. The success occurs if Richard
answers a question correctly and the failure occurs if Richard is
unable to answer a question correctly. Assuming that Richard
guesses on all 12 questions, find the probability that he will
answer no more than 3 questions...
QUESTION 12 2 points Save Answer In a baseball game, the probability that Peter gets on base safely isIf he comes to bat four times, what is the probabilitv that he will get on base safely at least three times? * Use the equation editor to enter your answer as a fraction Pann p words:0 ▲ QUESTION 13 2 points Save Answer Determine the probability of landing on tails at most 33 times if you flip a fair coin 80...
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