Descriptive Statistics - Find % of measurement in a certain range

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oceanwalk
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1. The problem statement:
A set of measurements of a parameter x has a normal distribution with mean of 50 and standard deviation of 1. If there are a very large number of measurements, approximately what percentage of measurements would you expect to be in the range 48 < x < 50?


Relevant equations
I have no idea


3. The Attempt at a Solution
Again, I have no idea.
 

Discussion

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Normal distribution refers to the bell curve. Here's a link to check out. Go through the explanation and try to work it out. After you've given it a shot and you end up getting stuck, let us know and we'll help you out.

http://en.wikipedia.org/wiki/Normal_distribution
 
if the measurements are normally distributed, in a large sample of them you should see the percentages follow those given in the Empirical Rule. That rule tells you the percentages to expect from [tex]\mu - k \sigma[/tex] to [tex]\mu + k \sigma[/tex] for the cases k = 1, 2, and 3. Use that, with a handily drawn sketch, to answer your question (I don't get that the intent is to use a probability calculation here).