Suppose that the probability that a text contains 10 or more instances of the word "president" is 1/5. Provide a lower bound on the expected number of instances of this word
Suppose that the probability that a text contains 10 or more instances of the word "president" is 1/5. Provide a lower bound on the expected number of instances of this word
The expected number of instances is:
This is obviously minimised subject to the constraint if , and for all other .