Mathematics, 19.03.2021 18:30, ghadeeraljelawy
A class of n students takes a test consisting of m questions. Suppose that student i submitted answers to the first ml questions.
a. The grader randomly picks one answer, call it (I, J), where I is the student ID 1, 1. . . . , n) and J is the question number (taking values . . . , m). Assume that all answers are equally likely to be picked. Calculate the number (taking values 1, joint and the marginal PMFs of I and J.
b. Assume that an answer to question j. if submitted by student i, is correct with probability Plj. Each answer gets a points if it is correct and gets b points otherwise. Calculate the expected value of the score of student i.
Answers: 3
Mathematics, 21.06.2019 17:30, wwesuplexcity28
33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.
Answers: 1
Mathematics, 21.06.2019 19:40, sswd
The owners of four companies competing for a contract are shown in the table below. if a report is released that advocates company b, which of the people having funded the report should result in the most skepticism? company owner of company company a jake adams company b company c company d debby smith henry rose rhonda baker o a. jake adams o b. rhonda baker o c. debby smith o d. henry rose
Answers: 2
Mathematics, 21.06.2019 22:20, jhonnysoriano9053
Select the correct answer from each drop-down menu. the table shows the annual sales revenue for different types of automobiles from three automobile manufacturers. sales revenue (millions of dollars) suv sedan truck marginal total b & b motors 22 15 9 46 pluto cars 25 27 10 62 panther motors 26 34 12 72 marginal total 73 76 31 180 the company with the highest percentage of sales revenue from sedans is . of the annual sales revenue from suvs, the relative frequency of pluto cars is .
Answers: 1
A class of n students takes a test consisting of m questions. Suppose that student i submitted answe...
Mathematics, 08.11.2019 13:31
Chemistry, 08.11.2019 13:31
Mathematics, 08.11.2019 13:31
Biology, 08.11.2019 13:31
Advanced Placement (AP), 08.11.2019 13:31
History, 08.11.2019 13:31