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.
A student takes a true-false test consisting of 15 questions. Assume that the student guesses at...
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.
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...
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 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. 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 a true-false test that has 14 questions and guesses randomly at each answer. Let X be the number or questions answered correctly. Find P(6). A)0.1222 B)0.2095 C)0.0001 D)0.183
a student takes a true false test that has 13 questions and guesses randomlyat each answer. let x be the number of questions answered correctly. find (p fewer than 4
Winning the jackpot in a particular lottery requires that you select the correct two numbers between 1 and 38 and, in a separate drawing, you must also select the correct single number between 1 and 52. Find the probability of winning the jackpot. The probability of winning the jackpot is (Type an integer or simplified fraction.) A biology class has 32 students. Find the probability that at least two students in the class have the same birthday. For simplicity, assume...
A test consists of 10 true or false questions. To pass the test a student must answer at least eight questions correctly. If the student guesses on each question what is the probability that the student will pass the test
Mary's Final Exam for Psychology has 10 True/False questions and 10 multiple choice questions with 4 choices for each answer. Assuming Mary randomly guesses on every question: **Write answers using 3 decimal places* a.) What's the probability that she gets at least 8 of the 10 true/false questions correct? b.) What's the probability that she gets at least 6 of the 10 multiple choice questions correct? c.) If the multiple choice questions had 5 choices for answers instead of 4,...