A

According to geologists, the San Francisco Bay Area experiences ten earthquakes with a magnitude of 4.1 or greater every 100 years. What is the standard deviation of the number of earthquakes with a magnitude of 4.1 or greater striking the San Francisco Bay Area in the next 40 years?

Multiple Choice

1.836

4.000

2.000

2.636

B

According to the Department of Transportation, 19% of domestic flights were delayed in the last year at JFK airport. Three flights are randomly selected at JFK. What is the probability that all three flights are delayed?

Multiple Choice

1.0000

0.5700

0.0069

0.9931

C

Find the probability P(1.70 Z 1.70).

Multiple Choice

3.880

0.935

0.910

0.050