The probability that a randomly chosen student in a statistics class submits his/her homework on time is 0.41. There is 35 student in the class. Each student does his/her homework independently. What is the expected value of X, where X is the number of students who submit the homework on time? QUESTION 8 The probability that a randomly chosen student in a statistics class submits his/her homework on time is 0.17. Each student does homework independently. In a statistics class of 50 students, what is the probability that at least 5 will do their homework on time? QUESTION 9 John's answering machine receives about 11 telephone calls between 8:00 am and 10:00 am. What is the probability that John receives exactly one phone call between 9:00 am and 9:15 am? QUESTION 10 The probability that a randomly chosen student in a statistics class submits his/her homework on time is 0.31. There is 36 student in the class. Each student does his/her homework independently. What is the standard deviation of X, where X is the number of students who submit the homework on time?