how do you find the mean of a random variable?

a gambler bets 10 dollars on red on a roulette wheel that have 18 red, 18 black, and 2 green slots. Whats his expected return?

how do you find the standard deviation of a random variable?

a gambler bets 10 dollars on a specific roulette number. he gets 350 if he wins with an average loss of 52.6 cents a bet. What is the standard deviation?

what is the probability you will fall into the middle section of a bell curve?

What is a Bernoulli experiment?

how do you find the probability of the outcomes for a Bernoulli experiment

what is the mean of a bernoulli experiment? the sigma?

what is a binomial experiment?

what do x and n-x equal in a binomial experiment?

How do you find the probability of x in a binomial experiment?

What are the Bernoulli random variables represented as? How do they appear on a number line?

when you see n over x in brackets, what does it mean?

Suppose that revenue Canada reports that 8% of all tax returns contain errors. An experiment consists of checking errors in a random sample of 10 tax returns. Find the probability that the sample contains exactly one error

at most one error?

at least one error?