Simulating multiplying a random variable
In this exercise you'll use simulation to confirm the rule you just learned about how multiplying a random variable by a constant effects its expected value.
This exercise is part of the course
Foundations of Probability in R
Exercise instructions
- Simulate 100,000 draws of X, a binomial random variable with size 20 and p = .1. Save this as
X - Use this simulation to estimate the expected value of X.
- Use this simulation to estimate the expected value of 5*X, as well.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Simulate 100,000 draws of a binomial with size 20 and p = .1
X <- ___
# Estimate the expected value of X
# Estimate the expected value of 5 * X