Data less than a z score of 0.83 is

Question

for a normally distributed set of data the percentage of data less than a z score of 0.83 is

Answer 1

Look it up on a z-score table:

  

Go to the intersection of the 0.8 row (under z column) and the 0.03 column.  The number there is the percent in decimal form of the data with a z-score of less than 0.83.  Multiply by 100 to express as a percent.