00:01
So in this question we're asked, which score indicates the highest relative position? so we are given three scores, 3 .2, mean is 4 .6, standard deviation 1 .5.
00:16
Second score is 630, mean is 800, standard deviation 200.
00:24
And third is a score of 43, mean 50, and standard deviation 5.
00:30
So to indicate to get the highest relative position, we're basically going to convert everything to a standard normal distribution using the formula x minus mean over the standard deviation.
00:45
We're going to calculate our three z scores and for each of the z scores we're going to get the area which will give us the percentile where the values are at and we can see which one has the highest relative position.
01:02
So here the z score is basically 3 .2 minus 4 .6 over 1 .5.
01:13
So 2 .2 minus 4 .6.
01:19
So the z score here is minus 0 .93...