I have a problem i cant seem to figure out. X is from a population with u=53 and s=24. A sample size of 59 is taken from the population and an average is computed i need to fine P(xbar < 50.7). I know i need to use the zformual but im completely lost when it comes to that part, I know z= (x-u)/s , I cant seem to use that in the equation. I have the answers already and can't match them up. I just need a push in the right direction to help me through. Thanks alot.