Mathematics, 12.03.2020 03:42 blueheeter1461
Each of 100 multiple-choice questions on an exam has four possible answers, one of which is correct. For each question, a student guesses by selecting an answer randomly. (a) Specify the distribution of the student's number of correct answers. (b) Find the mean and standard deviation of that distribution. Would it be surprising if the student made at least 50 correct responses? Why? (c) Specify the distribution of (n1, n2, n3, n4) where nj is the number of times the student picked choice j. Find the mean of nj , the variance of nj, the covariance between nj and nk, and the correlation between nj and nk.
Answers: 1
Mathematics, 21.06.2019 14:30, yousuasgha5705
After the seventh month of a 12-month loan: the numerator is: {(n + 11) + (n + 10) + (n + 9) + (n + 8) + (n + 7) + (n + 6) + (n + 5)} = , and the denominator is: {(n) + (n + 1) + + (n + 11)} = . therefore, the fraction is numerator/denominator (to the nearest tenth) = %
Answers: 2
Mathematics, 21.06.2019 21:40, Casey7019
Asystem of linear equations contains two equations with the same slope. select all of the correct statements. i a. the system may have two solutions. - b. the system may have infinitely many solutions. c. the system may have one solution. o d. the system may have no solution. submit
Answers: 3
Each of 100 multiple-choice questions on an exam has four possible answers, one of which is correct....
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