Posted by Nathan on Thursday, March 10, 2011 at 5:15pm.
The weights of adult males are normally distributed with a mean of 172 lb and a standard deviation of 29 lb
Q.Find the weight that divides the upper 2% of weights from the lower 98%

Statistics  PsyDAG, Friday, March 11, 2011 at 11:22am
Z = (scoremean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion and it corresponding Z score. Use Z value to find score in the above equation.