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The increased number of small commuter planes in major airports has heightened concern over air safety. An eastern airport has recorded a monthly average of nine near misses on landings and takeoffs in the past 5 years. (Round your answers to three decimal places.)

(a) Find the probability that during a given month there are no near misses on landings and takeoffs at the airport . 

(b) Find the probability that during a given month there are three near misses.

(c) Find the probability that there are at least three near misses during a particular month.

According to a study conducted by a university, children who are injured seven or more times tend to sustain these injuries during a relatively limited time, usually 1 year or less. Let the average number of injuries per year for school-age children be seven.

(a) Calculate the mean and standard deviation for x, the number of injuries per year sustained by a school-age child. (Round your answers to three decimal places.) 𝜇=  injuries 𝜎=  injuries

(b) According to Tchebysheff's Theorem, within what limits would you expect the number of injuries per year to fall at least three-quarters of the time? (Round your answer up to the nearest whole number.) 1  injury to   injuries

diamond guns germs and steel what is  the ‘economic problem’ and how does tradition works to solve it

Examine the history of American party politics from the Great Depression through the 1990s. Trace the evolution of the major political parties, their policies, and their constituencies during this period.

Modern American History (The Great Depression)

How did Roosevelt's economic policies (domestic and international) differ from Hoover's?

How did the Great Depression shaped American Economic History and what have Economist have learned since then?

The number of visits to a website is known to have a Poisson distribution with a mean of 10 visits per minute.

(a) What is the probability distribution for x, the number of visits per minute? p(x) =       

(b) What is the probability that the number of visits per minute is less than or equal to 11? (Round your answer to three decimal places.)

(c) What is the probability that the number of visits per minute is greater than 15? (Round your answer to three decimal places.)

(d) Within what limits does Tchebysheff's Theorem suggest you would expect the number of visits to this website to lie at least 89% of the time? (Round your answer up to the nearest whole number.) 0 to  visits