What is the nearest unit?
Probability
Level
2
The exam scores of all 500 students were recorded and it was determined that these scores were normally distributed. If Jane's score is 0.8 standard deviation above the mean, then how many, to the nearest unit, students scored above Jane?
400
394
250
106
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
If we have a normal distribution of scores, then N σ > μ (for N = 0 . 8 ) implies there are less than 2 5 0 students that scored above Jane. Thus, only Choice D is valid.