MATH 2565 Lecture Notes - Absenteeism
10 Jan 2013
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P(g) = 0. 64, p(s) = 0. 21, p( g and s) = 0. 17: p( s or g) = p(s) + p(g) p( s and g) = 0. 21 + 0. 64 0. 17 = Problem 15. 21: movies: 15/38 = 0. 3947, 15/51 = 0. 2941, (21 + 22 + 38)/(69 + 46 + 56) = 81/171 = 0. 4737. P(over 30|didn"t select a comedy) = p(over 30 and didn"t select a comedy ) Consider the two-way table l o r e t s e o h. High blood pressure and high cholesterol are not independent events. 28. 8% of men with ok blood pressure have high cholesterol, while 40. 7% of men with high blood pressure have high cholesterol. If having high blood pressure and high cholesterol were independent, these percentages would be the same. Organize using a tree diagram: no, the flight leaving on time and the luggage making the connection are not independent events.
