Ten percent of Americans are left-handed. A statistics class has 25 students in attendance. Find the mean and standard deviation for the number of left-handed students in such classes of 25 students.

When a customer places an order with Rudy’s Online Office Supplies a computerized account information system automatically checks to see if the customer has exceeded his or her credit limit. Past records indicate that the probability of customers exceeding their credit limit is 0.05. Suppose that, on a given day, 15 customers place orders. What is the probability that exactly two customers will exceed their limits?

If you give an answer i would like to know how you got it, thanks!

i havent done much of anything besides stare at them, i am not sure where to start or the formulas to use. (so even if you could just leave me with some formulas i would appreciate it.

When a customer places an order with Rudy’s Online Office Supplies a computerized account information system automatically checks to see if the customer has exceeded his or her credit limit. Past records indicate that the probability of customers exceeding their credit limit is 0.05. Suppose that, on a given day, 15 customers place orders. What is the probability that exactly two customers will exceed their limits?

If you give an answer i would like to know how you got it, thanks!

i havent done much of anything besides stare at them, i am not sure where to start or the formulas to use. (so even if you could just leave me with some formulas i would appreciate it.

Last edited: