00:01
Almost all medical schools in the united states require students to take the medical college admission test.
00:06
To estimate the mean score of those who work, or i'm sorry, those who took the mcat on your campus, you will obtain the scores of an srs of students.
00:15
The scores follow a normal distribution and from published information, you know that the standard deviation is 6 .6.
00:23
Suppose that unknown to you, the mean score of those taking the mcat on your campus is 27.
00:30
In answering the following, use z scores rounded to two decimal places.
00:34
If you choose one student at random, what's the probability that the student scores between 20 and 30? so we are going to do the probability that 20 minus 27 divided by 6 .6 is less than z, which is less than 30 minus 20.
00:57
Oops, that didn't come out, right? 30 minus 27 divided by 6 .6.
01:03
It's going to give us a zescore of negative 1 .06 and 0 .45...