00:01
Hey there, welcome to numerate.
00:03
So we are given a mean of 70 points and standard deviation of 6 points on a biology exam.
00:10
So with this, we are asked to find the probability or axis between 64 and 76.
00:16
So let's start off this by writing what we're dealing with here.
00:23
All right, so we have a mean that equals around 70 points.
00:30
And we have a mean.
00:30
And we have a mean that equals around 70 points.
00:32
Have a population standard deviation that equals around six points.
00:39
So the probability that axis between 64 and 76 equals.
00:51
So in order to find this probability, this is basically equivalent to the z score of, let's say, we do 64 minus our mean of 70 divided by our standard deviation of 6.
01:07
So this would be 6 over 6...