EE131A TA Recitation 1

EE131A TA Recitation 1 - EE131A Probability TA Recitation 1...

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EE131A Probability TA Recitation 1 Chihkai Chen
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Administration • Weekly homework sets are due at the midnight on Wednesdays • Office hours: Monday, 9:15-10:15pm Tuesday, 9:15-10:15pm • Email: chihkai@ucla.edu
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Sample space S , sample points s , and event E Ex. Toss two distinct dice. S has 36 points. E 1 = {First die is equal to the second die} = {(1,1),(2,2),(3,3),(4,4),(5,5),(6,6)}. E 2 = {First die is equal to 2} = {(2,1),(2,2),(2,3),(2,4),(2,5),(2,6)}. (1,1) (1,2) (1, 6) (2,1) (2,6) = (6,1) (6,6) ⎧⎫ ⎪⎪ ⎨⎬ ⎩⎭ S " # ""
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Set operations E 3 = {First die is equal to the second die or the first die is equal to 2} E 3 = E 1 E 2 ={(1,1),(2,1),(2,2),(2,3),(2,4),(2,5),(2,6),(3,3 ),(4,4),(5,5),(6,6)}. E 4 = {First die is equal to the second die and the first die is equal to 2} E 4 = E 1 E 2 = {(2,2)}
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Probability of an event Ex. Toss two distinct dice. a.What s the probability that the first die is equal to
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EE131A TA Recitation 1 - EE131A Probability TA Recitation 1...

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