Probability question HELP.

Question

The mean is 26. The standard deviation is 5. Find the probability that a given chicken lays more than 32 eggs in a month.

Answer 1

Calculate the z-score (look it up) then look up the percentile on a z score table (http://www.z-table.com/).  The percentile is the percent of chickens that lay 32 or fewer eggs.  So the probability that a given chicken will lay more than 32 eggs is 1 - percentile.