Mathematics, 23.11.2019 05:31 elijah4723
There are two envelopes, each of which has a check for a unif(0,1) amount of money, measured in thousands of dollars. the amounts in the two envelopes are independent. you get to choose an envelope and open it, and then you can either keep that amount or switch to the other envelope and get whatever amount is in that envelope.
suppose that you use the following strategy: choose an envelope and open it. if you observe 'u', then stick with that envelope with probability 'u', and switch to the other envelope with probability 1-u
a) find the probability that you get the larger of the two amounts
b) find the expected value of what you will receive
Answers: 2
Mathematics, 21.06.2019 19:50, Roshaan8039
Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
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Mathematics, 21.06.2019 22:30, coolcat3190
What is 1.5% of 120 or what number is 1.5% of 120
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Mathematics, 22.06.2019 01:30, lyndah15
Here are the 30 best lifetime baseball batting averages of all time, arranged in order from lowest to highest: 0.319, 0.329, 0.330, 0.331, 0.331, 0.333, 0.333, 0.333, 0.334, 0.334, 0.334, 0.336, 0.337, 0.338, 0.338, 0.338, 0.340, 0.340, 0.341, 0.341, 0.342, 0.342, 0.342, 0.344, 0.344, 0.345, 0.346, 0.349, 0.358, 0.366 if you were to build a histogram of these data, which of the following would be the best choice of classes?
Answers: 3
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