Take a guess: A student takes a multiple-choice test that has 12 questions. Each question has...
Take a guess: A student takes a multiple-choice test that has 12 questions. Each question has five choices. The student guesses randomly at each answer. Let X be the number of questions answered correctly.
(a) Find P(5
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Take a guess: A student takes a multiple-choice
test that has 12 questions. Each question has...
A student takes a multiple choice test that has 8 questions. Each question has five choices....
A student takes a multiple choice test that has 8 questions. Each question has five choices. The student guesses randomly at each answer. Let X be the number of questions answered correctly. a) P(3) = ? b) P(More than 2) =
A student takes a multiple-choice test that has 10 questions. Each question has two choices. The...
A student takes a multiple-choice test that has 10 questions. Each question has two choices. The student guesses randomly at each answer. Round the answers to three decimal places. 1. p(2) = 2. p(more than 3)=
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...
a student takes a true-false test that has 6 questions and guesses randomly at each answer....
a student takes a true-false test that has 6 questions and guesses randomly at each answer. Let X be the number of questions answered correctly. Find P(4) 0.3125 0.0938 0.0156 0.183
A student takes a true-false test that has 13 questions and guesses randomly at each answer....
A student takes a true-false test that has 13 questions and guesses randomly at each answer. Let X be the number of questions answered correctly. Find P(Fewer than 4) 0.0461 0.8666 0.0112 0.1334
A student takes a true-false test that has 14 questions and guesses randomly at each answer....
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 multiple choice test consisting of 5 questions where there are 4 choices...
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.
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 a true false test that has 13 questions and guesses randomlyat each answer....
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
Suppose a quiz has 12 multiple-choice questions. Each question has 4 answer choices. If a student...
Suppose a quiz has 12 multiple-choice questions. Each question has 4 answer choices. If a student takes the quiz and randomly guesses on every question. Find the probability the student gets between 2 and 7, exclusive, questions correct. Find the probability the student gets more than 8 questions correct.
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...
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.
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