What is the approximate ratio of the difference in means to the mads if the data set?

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).

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Solve this problem! extra ! 3025/5.5 = a/90.75 / = fraction