Question 281549
You want to find the Z score for each subject. You can recall, the higher z is, the smaller the graph goes which symbolize a higher tier in ranking. For a higher ranking, you want to take the greatest positive z

So, to calculate z score, you would calculate {{{z = (x - M)/s}}} where x is the data, M is the mean, and s is standard deviation.

For English:

{{{(80 - 75)/8 = 5/8}}}

For History:

{{{(72 - 60) / 15 = 12/15 = 4/5}}}

{{{ 4/5 > 5/8}}} => History achieved higher standard.

Now we need to find what percentage of others achieved higher marks in each subject. Unfortunately Z tables calculate Z values different and for that I cannot tell you how to use a Z table. 

We calculated Z = 5/8 for English

We want to find P(z > 5/8)

You may need to do .5 - P(z = 5/8) or 1 - P(z = 5/8) depending on your Z table

Same thing with history except:

You may need to do .5 - P(z = 4/5) or 1 - P(z = 4/5) depending on your Z table.

Good luck!