Solutions Statistics

The number of tennis balls ordered by club members of a country club pro shop has this probability d

Question: The number of tennis balls ordered by club members of a country club pro shop has this probability distribution. Balls are packaged in a can of 3. Complete the table shown and find the mean, variance, and standard deviation for the distribution. Round b, c, and d to 2 decimal places as needed.

x	P(x)	x × P(x) Round to 2 decimals	x - m Round to 2 decimals	(x - m)² Round to 4 decimals	P(x) × (x - m)² Round to 4 decimals
3	0.14
6	0.08
9	0.36
12	0.32
15	0.10
		å x × P(x) =			å P(x) × (x - m)² =