Mathematics, 05.05.2020 13:46 Lizzy527663
3. Suppose that Joanne tosses a fair coin with probability 1/2 of heads, and Jaden tosses a biased coin with probability p(≠1/2) of heads, at the same time. Joanne will get one point if both coins show the same outcome, and lose one point otherwise, in each trial where Joanne and Jaden toss their own coins simultaneously. That is, Joanne's point is +1 if both coins show the same outcome, and -1 otherwise, in each trial.
(a) Suppose that Joanne and Jaden simultaneously toss their own coins 20 times. Let X be the total points Joanne gets. Find the expected value of x², E(X²).
(b) Let Y be the number of tosses until both coins simultaneously show the same outcome. Find the expected value of Y^2, E(Y^2).
Answers: 1
Mathematics, 21.06.2019 15:40, xxaurorabluexx
What is the distance between the points 4,10 and -3,-14 on the coordinate plane
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Mathematics, 21.06.2019 17:00, Zykuko
Asays "we are both knaves" and b says nothing. exercises 24–31 relate to inhabitants of an island on which there are three kinds of people: knights who always tell the truth, knaves who always lie, and spies (called normals by smullyan [sm78]) who can either lie or tell the truth. you encounter three people, a, b, and c. you know one of these people is a knight, one is a knave, and one is a spy. each of the three people knows the type of person each of other two is. for each of these situations, if possible, determine whether there is a unique solution and determine who the knave, knight, and spy are. when there is no unique solution, list all possible solutions or state that there are no solutions. 24. a says "c is the knave," b says, "a is the knight," and c says "i am the spy."
Answers: 2
Mathematics, 21.06.2019 17:30, kleshead
Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x
Answers: 3
3. Suppose that Joanne tosses a fair coin with probability 1/2 of heads, and Jaden tosses a biased c...
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