Statistics- There is a 70% chance they will reach New York

| September 10, 2016

Question
10)
We release 10 balloons. There is a 70% chance they will reach New York.
Joshua Ross releases 12. What is the probability that exactly 9 balloons will
reach New York?
11)
When people were shown pictures of Michael Jackson, 95% of them
recognized him. Find the probability that among 12 randomly selected
people, exactly 10 will recognize Michael Jackson.
12)
Jorina just learned to play basketball. On average she can land 25% of her
free throws. Assume she shoots 10 free throws. Find the probability that
she can land at least 1 of the 10 free throws.

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