Alex tracked the number of cups of coffee he drank each day for the following month and

created a new probability distribution.

Number of Cups of Coffee, X 0

1 2 3 4

Relative Frequency, P(X) 0.035 0.579 0.286 0.080 0.020

According this new data, Alex is expected to drink 1.471 cups per day.

4. Calculate s(X) of Alex's new probability distribution. (1 point)

0.599

0.775

1.471

4.223