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Suppose that in a certain region of California, earthquakes occur at the average rate of 7...

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Question

Statistics

Suppose that in a certain region of California, earthquakesoccur at the average rate of 7 per year.

(a) What is the probability that in exactly three of the nexteight years, no earthquakes occur?

(b) What is the **expect**ed number of years to wait until wehave a year with exactly 7 earthquakes?

(c) In the next century, how many years would you **expect** tosee with more than 10 earthquakes?

Hint: When you see the word \"expect\" you should expect to usethe expected value!

Answer & Explanation Solved by verified expert
3.9 Ratings (369 Votes)
Let Y be a Poisson random variable which denotes the number ofearthquakes per yearMean of Y 7Probability that no earthquake occurs in a    See Answer
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