Mathematics, 25.03.2020 00:54 psychocatgirl1
Oh no! Thomas is lost in the GGBL building after an exam, and trying to get out. Thereare four identical hallways leading away from him. One of the hallways will take 12 minutesto walk and will lead him out. However the other three hallways will take 10 minutes, 10minutes, and 40 minutes respectively, to walk. At the end of those three hallways Thomasfalls through a trapdoor back to where he started. Assume the following:•Thomas can choose only one hallway at a time and cannot turn around•When Thomas falls through a trapdoor he cannot tell which hallway he chose last•The hallways are indistinguishable aside from their outcomeLetTbe a random variable for how long it will take Thomas to escape. What isE(T)?Hint:Consider three events, H1,H2,H3where Thomas chooses the escape hall, one of the10 minute halls, or the 40 minute hall, respectively. Note thatH1,H2, andH3cover allpossible cases for the first choice of hallway and do not overlap. The law of total expectationstates that:E(T) =E(T|H1)P(H1) +E(T|H2)P(H2) +E(T|H3)P(H3)
Answers: 1
Mathematics, 21.06.2019 12:30, hannahgracew12
Matteo makes raspberry punch. the table shows how many parts ginger ale and raspberry juice to use for a batch. raspberry punch parts ginger ale 2 parts raspberry juice 3 matteo decides to add one part of raspberry juice. what is the new ratio of ginger ale to raspberry juice?
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Mathematics, 21.06.2019 18:30, jeffreyaxtell4542
10% of 1,900,000. show me how you got the answer
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Mathematics, 21.06.2019 21:30, camosloppy3150
Aboard 60 in. long is cut two parts so that the longer piece is 5 times the shorter. what are the length of the two pieces?
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Oh no! Thomas is lost in the GGBL building after an exam, and trying to get out. Thereare four ident...
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