Question 1170058
z-score is 3.33
z-score of mean is 0.
area to the left of the mean is .5
area to the left of the z-score of 3.33 is .99957
area between z-score of 0 and 3.33 is .49957 = .5 rounded to 2 decimal places.


here's the table.


<a href = "https://www.math.arizona.edu/~rsims/ma464/standardnormaltable.pdf" target = "_blank">https://www.math.arizona.edu/~rsims/ma464/standardnormaltable.pdf</a>