If m
a. x=43, y=47
b. x=47, y=43
c. x=90, y=47
d. x=99, y=43

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).

What situation is an example of an observational study

Can someone tell me if this is perpendicular? !