I need to know how to find the probability that z0 is greater than or equal to 2.40 using my TI-83+. The answer is .008200, but I don't know how to get that using my calculator. The only reason I know the answer is because it is an example from my homework. Please help!

I don't have a TI-83+, but you can find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to your Z score.