A student takes a 20-question, true/false exam and guessed on each question
Homework Answers
Prob. of 15 = .5^15...
Prob. of 20 = .5^20
Either-or probability = sum of individual probabilities.
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A student takes a 20-question, true/false exam and guessed on each question
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.
2. A professor gives a twenty question true/false quiz. The lowest passing quiz score is 12...
2. A professor gives a twenty question true/false quiz. The lowest passing quiz score is 12 correct out of 20. Suppose a student randomly and independently guesses on each quiz question, what is the probability that the student earns a passing grade? Round to 4 decimal places.
A student takes a ten-question true-false quiz, but did not study and randomly guesses each answer....
A student takes a ten-question true-false quiz, but did not study and randomly guesses each answer. Find the probability that the student passes the quiz with a grade of at least 40% of the questions correct. (Round your answer to three decimal places.)
A student takes a ten-question true-false quiz, but did not study and randomly guesses each answer....
A student takes a ten-question true-false quiz, but did not study and randomly guesses each answer. Find the probability that the student passes the quiz with a grade of at least 60% of the questions correct. (Round your answer to three decimal places.)
A student takes an exam containing 18 true or false questions. If the student guesses, what...
A student takes an exam containing 18 true or false questions. If the student guesses, what is the probability that he will get exactly 15 questions right? Round your answer to four decimal places.
A history professor decides to des to give a 15-question true-false quiz. She wants to choose...
A history professor decides to give a 15-question true-false quiz. She wants to choose the passing grade such that the probability of passing a student who guesses onevery question is less than 0.10. What score should be set as the lowest passing grade?
A student ran out of time on a multiple choice exam and randomly guessed the answers...
A student ran out of time on a multiple choice exam and randomly guessed the answers for two problems. Each problem had 5 answer choices - a, b, c, d. e - and only one correct answer. What is the probability that she answered neither of the problems 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
5. The percentage of accounting undergraduates passing the CPA exam is 20% (assume every student takes...
5. The percentage of accounting undergraduates passing the CPA exam is 20% (assume every student takes the test). You randomly select 17 graduating accounting students and would like to know a few things about their prospects of passing the test. (14 points) a) What distribution would be appropriate for this question? Why? b) What is the probability that exactly 5 will pass the exam? c) What is the probability that at least 9 will pass the exam? d) What is...
A student takes a 13-question, multiple-choice exam with two choices for each question and guesses on...
A student takes a 13-question, multiple-choice exam with two choices for each question and guesses on each question. Assume the variable is binomial. Round the intermediate and final answers to three decimal places Find the probability of guessing at least 9 out of 13 correctly P (guessing at least 9 out of 13 correctly) -
2. A professor gives a twenty question true/false quiz. The lowest passing quiz score is 12 correct out of 20. Suppose a student randomly and independently guesses on each quiz question, what is the probability that the student earns a passing grade? Round to 4 decimal places.
A student ran out of time on a multiple choice exam and randomly guessed the answers for two problems. Each problem had 5 answer choices - a, b, c, d. e - and only one correct answer. What is the probability that she answered neither of the problems 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
A student takes a 13-question, multiple-choice exam with two choices for each question and guesses on each question. Assume the variable is binomial. Round the intermediate and final answers to three decimal places Find the probability of guessing at least 9 out of 13 correctly P (guessing at least 9 out of 13 correctly) -
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