A certain region of a country is, on average, hit by 6.5 hurricanes a year. (a) What is the probability that the region will be hit by fewer than 8 hurricanes in a given year? (b) What is the probability that the region will be hit by anywhere from 4 to 7 hurricanes in a given year? Click here to view the table of Poisson probability sums. (a) The probability that the region will be hit by fewer than 8 hurricanes in a given year is. (Round to four decimal places as needed.) (b) The probability that the region will be hit by anywhere from 4 to 7 hurricanes in a given year is (Round to four decimal places as needed.)

In economics, of all new products put on the market, 60% failed and are taken off the market within 2 years. Suppose a store introduces 80 new products. What is the probability that within 2 years 55 or more will fail?

Coronary bypass surgery: A healthcare agency reported that 87% of people who had coronary bypass surgery in 2008 were over the age of 65. Fifteen coronary bypass patients are sampled. Part 1 of 4 (a) What is the probability that exactly 10 of them are over the age of 657 Round the answer to four decimal places. The probability that exactly 10 of them are over the age of 65 Part 2 of 4 Part 3 of 4 (b) What is the probability that more than 11 are over the age of 657 Round the answer to four decimal places. The probability that more than 11 are over the age of 65 is Part: 3 4 X Part 4 of 4 X (c) What is the probability that fewer than 9 are over the age of 65: Round the answer to four decimal places. The probability that fewer than 9 are over the age of 65 is X 5 (d) Would it be unusual it all of them were over the age of 657 Use a cutoff of 0.05. It (Choose one) ▼ be unusual if all of them were over the age of 65. 5 $

Studies show that historically a certain city is hit by a tornado about once every 5 years. What is the probability that the city will be hit by a tornado in two consecutive years?