# Statistics

posted by .

From a recent statistical analysis for the last five years, on an average there
are 4 (major) air accidents per month in the world. Let X be the number of air accidents occurred in a randomly selected month. It is known that X ~ Poisson() approximately, where the intensity   4 accidents (monthly average number of accidents). Find the probability that there will be 4 or more air accidents

• Statistics -

Sooo...I see you are having problems with this too! LOL

• Statistics -

Try the Poisson Distribution.

Poisson distribution (m = mean):
P(x) = e^(-m) m^x / x!

Values:
x = 0,1,2,3
m = 4

Calculate P(0), P(1), P(2), P(3). Add together, then subtract that value from 1. This will be your probability.

I hope this will help get you started.

## Similar Questions

1. ### Statistics

I have a problem I need some help on. I have answered parts. Any guidance would be appreciated. K For many years the numbers of accidents per week at a hazardous intersection have been studied. The number of accidents per week varies …
2. ### Statistics

I have a problem I need some help on. I answered some. For many years the numbers of accidents per week at a hazardous intersection have been studied. The number of accidents per week varies with mean 2.2 and standard deveiation 1.4. …
3. ### premise and conclude

One might explain the difference in reaction by saying that we naturally respond more strongly to the deaths of Americans closer to home than to those of others halfway around the world. But then consider the fact that, every month …
4. ### STATISTICS

The Sarasota Police department collected data on the number of car accidents ( X ) that occur each day on a certain stretch of route 41. From this data, they derived the probability distribution shown in the table below. X P(X) 0 0.80 …
5. ### statistics

The number of accidents per week at a hazardous intersection varies with mean 2.2 and standard deviation 1.4. a. What is the distribution of Xbar, the mean number of accidents in one year, (52 weeks)?
6. ### statistics

Suppose that the number of accidents occurring in an industrial plant is described by a Poisson process with an average of 1.5 accidents every three months. During the last three months, four accidents occurred. (a)probability that …
7. ### statistics

a company decides to add a new program that prepares randomly selected sales personnel to increase their number of sales per month. The mean number of sales per month for the overall popualtion of sales people at this national company …
8. ### Statistics

1. A company decides to add a new program that prepares randomly selected sales personnel to increase their number of sales per month. The mean number of sales per month for the overall population of sales people at this national company …
9. ### statistics

1. A company decides to add a new program that prepares randomly selected sales personnel to increase their number of sales per month. The mean number of sales per month for the overall population of sales people at this national company …
10. ### Stat

For a recent year the following are the numbers that occurred each month in a city. use a .05 significance level to test the claim that homicides in the city are equally likely for each of the 12 months calculate test statistics, x^2 …

More Similar Questions