I need help finding the variance

Question 2 of 4 (1 point) |Attempt 1 of Unlimited | View question in a popup Fitness Machine A fitness center bought a new exercise machine called the Mountain Climber. They decided to keep track of how many people used the machine over a 3-hour period. Here X is the number of people who used the machine. X 0 2 3 4 P(X) 0.1 0.2 0.1 0.3 0.3 20 Send data to Excel ola Part 1 of 3 Find the mean. Round your answer to one decimal place as needed. Mean: H = 2.5 Part: 1 / 3 Part 2 of 3 Find the variance. Round your answer to one decimal place as needed. Variance: o =