Sandy gave a high five to 2 of her friends. Each of her friends gave a high five to 2 more friends who each gave a high five to
2 friends. This process continued. She made a table showing the number of people who had received a high five with each round.
Which graph best shows the relationship between the number of rounds and the number of people who received a high five?
Which graph best shows the relationship between the number of rounds and the number of people who received a high five?
1 answer:
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Answer:
Step-by-step explanation:
Given a binomial experiment with n trials and probability of success p,
Since each term of the summation is multiplied by x, the value of the term corresponding to x = 0 will be 0. Therefore the expected value becomes:
Now,
Substituting,
Factoring out the n and one p from the above expression:
Representing k=x-1 in the above gives us:
This can then be written by the Binomial Formula as: