Only have the following info on a population:

mean = 10

SD = 2.8

median = 10

BAsed on this info..what is probability that a randomly selected individual has a value of 10 or more i.e. P(x>=10)?

I know I need to find a z-value (I think) to look up this probability in a normal distribution table but what value do I look for? I don't think the answer is as simple as 0.50 (50%) given that the mean=median=10. Is it?

Thanks for your help.