# statistics

An average of 1.4 private airplanes arrive per hour at an airport.

Let x denote the number of private airplanes that will arrive at this airport during a given hour. Calculate the probability distribution of x.

Find the probability that x = 4.

1. 👍 0
2. 👎 0
3. 👁 85
1. Using a Poisson distribution:

P(x) = (e^-μ) (μ^x) / x!

e = 2.71828
µ = 1.4
x = 4

Substitute and calculate.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Math

Two airplanes at 25,000 ft above the ground are flying toward the same airport.Airplane A is flying due south towards the airport at 200 miles per hour.At 10:00 AM Airplane A is 700 miles from the airport,and Airplane B is 925

asked by Bob on August 14, 2012
2. ### math

2 airplanes start at the same time from airports 500 km apart. Each flies with an airspeed of 200 km/hr toward the other airport. One reaches its airport half an hour before the other plane reaches the other airport. How fast is

asked by Ed on February 16, 2012
3. ### trig

Two Airplanes leave an airport at the same time on different runways. One flies on a bearing of N66degreesW at 325 miles per hour. The other airplane flies on a bearing öf S26degreesW at 300 miles per hour. How far apart will the

asked by nina on January 6, 2014
4. ### math

Issa IS driving to the airport to catch a flight to Miami, and Her arrival depends on traffic. If the traffic is light, then she can drive 60 mph and arrive at the airport 1 hour early. If traffic is heavy, she can drive 35 mph

asked by Jane on July 18, 2012
5. ### Math

Issa is driving to the airport to catch a flight to Miami, and her arrival depends on traffic. If the traffic is light, then she can drive 60 mph and arrive at the airport 1 hour early. If traffic is heavy, she can drive 35 mph

asked by Jane on July 10, 2012
6. ### math

two airplanes depart simultaneously from an airport.One flies due south, the other flies due east at a rate 20 mi/h faster than that of the other airplane. After one hour , radar indicates that the airplanes are approximately 450

asked by masha on October 12, 2016
7. ### Alg 1

Issa is driving to the airport to catch a flight to miami, and her arrival depoends on traffic. If the traffic is light, then she can drive 60 mph and arrive at the airport 1 hour early. If traffic is heavy, she can drive 35 mph

asked by Jane on May 9, 2013
8. ### Trigonometry

two airplanes leave an airport at the same time one hour later they are 189km/hr apart. if one plane traveled 168km/hr and the other traveled 244km/hr for the hour what is the angle between their flight path

asked by Mark on June 8, 2016
9. ### Algebra

a plane travelling 600 miles per hour is 30 miles from an airport at 4:58pm. At what time will it arrive at the airport

asked by Amina on August 20, 2015
10. ### algebra

A private plane leaves an airport and flies due east at 192 miles per hour. Two hours later, a jet leaves the same airport and flies due east at 960 miles per hour. How long will the private plane fly until it is passed by the

asked by Anonymous on March 25, 2015

More Similar Questions