A(n) ___ is a numerical summary of a sample.

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?