A school requires an entrance exam score that is in the top 3% of the population in order to be accepted. If an entrance exam has a mean of 500 and a standard deviation of 55, what is the minimum qualifying score to be accepted at the school?

Question

anonymous · Answer

When I look it up people get a Z score of 1.88, if anyone could tell me how ill give you a medal

anonymous · Answer

I think I got it to whoever is typing

phi · Answer

Yes, a Z score of 1.88 

in other words,  the area "under the bell curve" from -infinity up to 1.88  is 97% 
and 3% is to the right of 1.88

to get the score  do mean + std dev * 1.88
500 + 1.88*55

anonymous · Answer

Yes, thanks for the reply, I figured it out as you were typing. I was trying to find a Z score of .97, instead of the actual probability,now i get it. ty

phi · Answer

and can you change the z-score to a test grade?