STAT2593 Lecture 2: Chapter 2
Document Summary
Chapter 2: experiment: an action or process where the outcome is not known, sample space: all possible outcomes, event: subset in outcomes of a sample space. A b read as a or b not allowed to write "0 to 5" for {0,1,2,3,4,5} example: A c =0,1,2,3,4,5: intersection from example above, A b a and b. For an event a, complement of a is defined by. Anything but a using the example again: say sample space is s = {0,1,2,3,4,5,6} A " or ac: mutually exclusive events. A b={ } empty sets are defined by phi, not zero. P(h) = = number of possibilities over number of total outcomes. P(a") = p(s) p(a) = 1 if a and b are mutually exclusive, p(a and b) = 0. P a b =p a p b p a b newspapers. P a =0. 60 , p b =0. 80 , p a b =0. 50.
