MTH 514 Midterm: MTH514-Winter-2017-Sample Midterm 1
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Instructions: print o a copy of this test and carefully work out the solutions, this assignment will be marked and may be used to improve your rst test mark. Date: the 2016 poll of ryerson engineering students indicates that 20% of students carry one electronic device, 50% carry two devices and 30% have three devices. The expected number of devices per student is closest to: hello (a) (b) (c) (d) (e) 1. 6: the vaccine for smallpox was developed because it was noticed that no individual ever got both smallpox and the related but less severe cowpox. In the general population let a represent the collection of people who have ever had smallpox, and let b represent the collection of people who have ever had cowpox. Prior to vaccines, choosing a person at random you would nd p [a] 6= 0 and p [b] 6= 0.
