Calculates the Poisson distribution probability mass function.
For a Poisson distribution with a mean of 4, calculate the probability of P(X = 8)
Value | Keystrokes | Display | Description |
---|---|---|---|
4.0 | λ | 4.0 | Stores the λ value. |
8 | k | 8.0 | Stores the k value. |
pmf | 0.02977 | Calculates the pmf. |
Given that the number of customers arriving per hour at a business is a Poisson distribution, if the probability of 0 arriving is 0.02, what is the mean?
Value | Keystrokes | Display | Description |
---|---|---|---|
.02 | pmf | 0.02 | Stores the pmf value. |
0 | k | 0.0 | Stores the k value. |
λ | 3.912 | Calculates the mean. |
Reference:
Poisson distribution - Wikipedia