Probability of exactly two earthquakes of magnitude 8

Reference no: EM131426396

Physical Sciences

There are over 1 million earthquakes worldwide of magnitude 2-2.9 each year. However, the mean number of earthquakes of magnitude 8 or higher is approximately one per year.38 Suppose a random year is selected.

a. What is the probability of exactly two earthquakes of magnitude 8 or higher?

b. What is the probability of at most four earthquakes of magnitude 8 or higher?

c. Suppose there are three earthquakes of magnitude 8 or higher. Is there any evidence to suggest that the mean is different from one? Justify your answer.

Reference no: EM131426396

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