A student takes a 10 question true-false quiz, but did not study and randomly guesses each answer. Let X be the number of questions answered correctly. a) The variable X is binomially distributed with n = and p = b) Find the mean of X. c) Find P(X = 10). Round your answer to 5 decimal places. d) Find P(X ≥ 7). Round your answer to 5 decimal places
A student takes a 10 question true-false quiz, but did not study and randomly guesses each...
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
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.
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
A quiz consists of 980 true or false questions. If the student guesses on each question, what is the mean number of correct answers? O 490 196 980 00 245 None of these
A quiz consists of 30 true or false questions. If the student guesses on each question, what is the mean number of correct answers? A.) 0 B.) 15 C.) 6 D.) 30
A true-false quiz with 10 questions was given to a statistics class. Following is the probability distribution for the score of a randomly chosen student. Find the mean score and interpret the result. Round the answers to two decimal places as needed. 5 6 7 9 10 P(x) 0.08 0.18 0.35 0.22 0.11 0.06 8 to Excel х The mean is If we were to give this quiz to more and more students, the mean score for these students would...
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) =