Mathematics, 28.05.2021 17:40 mistiehaas
You have a tree with horizontal branches and these occur at three levels. There is one branch at the top level, there are two branches at the 2nd level, there are 3 branches at the 1st level, and there is the ground below.
A phoenix lives in your tree. At night, it roosts on the branch at the top level of your tree. In the morning, it descends to the ground. It can do this directly, or it can stop off anywhere along the way down. But it never moves horizontally, always down.
Use the following notation: T for the top branch; A and B for the branches on the second level; 1, 2, and 3 for the branches on the first level; and G for ground.
Draw a digraph representing the paths the phoenix can take from the top branch to the ground.
Determine how many unique paths the phoenix can take on its descent.
Imagine there are n levels to the tree with each level having one more branch than the one above it. How many paths will the phoenix have then?
Answers: 2
Mathematics, 21.06.2019 19:40
Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297
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Mathematics, 21.06.2019 23:30
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You have a tree with horizontal branches and these occur at three levels. There is one branch at the...
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