Calculating the expected value

What is the expected value of a binomial distribution where 25 coins are flipped, each having a 30% chance of heads?

This exercise is part of the course

Foundations of Probability in R

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Exercise instructions

  • Calculate this using the exact formula you learned in the lecture: the expected value of the binomial is size * p. Print this result to the screen.
  • Confirm with a simulation of 10,000 draws from the binomial.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Calculate the expected value using the exact formula


# Confirm with a simulation using rbinom