The random variable x represents the number of computers that families have along with

the corresponding probabilities. find the mean and standard deviation for the random

variable x.

the x values are 0,1,2,3,4 and the p(x) values are 0.49, 0.05, 0.32, 0.07, 0.07

What is the circumference of the pie

Astock has a 25% probability of increasing by $10 and a 75% probability of decreasing by $5. what is the stocks expected increase or decrease?

Suppose that prices of a gallon of milk at various stores in one town have a mean of $3.71 with a standard deviation of $0.10. using chebyshev's theorem, what is the minimum percentage of stores that sell a gallon of milk for between $3.41 and $4.01? round your answer to one decimal place.