percentile rank
posted by Ann .
i would like to able to find the percentile rank of a z score 0.313152
can someone tell me how to do this.

It's about 62.3%. That is the fraction with LOWER zscores.
I used an online normal distribution calculator.
Try the one at
http://davidmlane.com/hyperstat/z_table.html
There are many others you can find with Google. 
round it if its about 62.3% then its closest to 62 percent
hope this helped