Suppose you have a branching process with the following given probabilities that each individual in the current generation will, by the end of its lifetime, have produced j new offspring (j = 0, 1, 2, ...). Find the probability that each of these branching processes will eventually die out under the lassumption that XO = 1. • PO = 14, P2 = 3 4. • PO = 14, P1 = 12, P2 = 14. • PO = 16, P1 = 12, P3 = 13. • PO = 1 10, P1 = 2 10, P2 = 3 10 , P3 = 4 10
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- Suppose the time it takes Alex to do this exam is exponentially distributed with parameter 3 per hour, and the time it takes Ben to do the exam is exponentially distributed with parameter 2per hour. Assume that these two times are independent.(a) What is the probability that Alex finishes before Ben?(b) What is the expected time in minutes until the first one finishes this exam?(c) What is the probability that neither Alex nor Ben finishes the exam within 3 hours?Suppose that there are two identically-looking batteries in a box. The first one should last for a time that is exponentially distributed with parameter λ1 = 1 (in months). The second one should last for a time that is exponentially distributed with parameter λ2 = 2. A battery has been picked randomly and is still working after two months. Given this information, what is the probability that the first battery was picked?A frog starts at location A and wants to get to location B that is 500 meters away.Starting at A, it sits at a given spot on the path from A to B for a time that is exponen-tially distributed with parameter 1 (minute). After that, it jumps 1 meter towards B, sitsin the new spot for an exponentially distributed time, etc. All the times are independent.What is the probability (approximately) that it will get to B within 7 hours?
- Suppose a particle moves along tje x-axis beginning at 0. It moves one integer step to the left or right with equal probability. What is the probability function of its position after four steps?For a given electronic component, it has been shown that it is necessary to restart once every 250 hours. Let X be the number restarts within 1000 hours. (f) Given that the electronic component has been operating continuously for 200 hours, what is the probability that it will operate for another 400 hours?A forest consists of two types of trees; young (between 0 and 3 m tall) and adults (more than 3 m). Each year, 20% of young trees die, 10% sell for $20 each, 30% remain between 0 and 3 m, and 40% grow taller than 3 m. Each year, 40% of adult trees sell for $50, 20% sell for $20, 30% remain in the forest, and 10% die. If it costs $5 to plant a tree, what is the expected profit for each tree planted?
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