ggplot histogram of Poisson distribution

Question

How to make a ggplot histogram of a Poisson distribution with lambda = 2.5? x-axis = 0:10.

In this histogram, I need to indicate P(X>=4) with colors, being x=0:4 one color and x=5:10 another color.

Thank you so much.

Answer 1

Here is the code for that. R includes a function for generating data according to the most common distributions. You only need to classify according to your criteria.

# Generate data
d <- rpois(n = 10e5, lambda = 2.5)

# categorise the data according to your criteria
data <- data.frame(d = d, 
                   col = ifelse(d < 5, "red", "blue"))

library(ggplot2)

ggplot(data, aes(x = d, fill = col)) +
  geom_histogram(bins = 14, color = "black")

However, it is recommended to do more research before posting a question.