A car dealership sells an average of 10 cars in a day. Using the Poisson​ model, what is the probability that the dealer sells 8 cars​ tomorrow?

Respuesta :

Answer:

P(X=8)=11.2599 %

Step-by-step explanation:

According to the Poisson Model:

P=[tex]\frac{e^{-\lambda}\lambda^{x}}{x!}[/tex]

where:

λ is the average of cars sold

x is the number of cars sold tomorrow

P is the probability of cars sold tomorrow

In our case:

Given data:

λ=10 cars

x=8 cars

Required:

The probability that the dealer sells 8 cars​ tomorrow=?

Solution:

[tex]P=\frac{e^{-\lambda}\lambda^{x}}{x!}\\ P=\frac{e^{-10}10^{8}}{8!}\\P=0.112599\\P=11.2599\%[/tex]

P(X=8)=11.2599 %