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The SAT mathematics scores in the state of Florida for this year are approximately normally distributed with a mean of 500 and a standard deviation of 100.

Using the empirical rule, what is the probability that a randomly selected score lies between 500 and 700? Express your answer as a decimal

 Jan 18, 2017
 #1
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See the graph below of a standard bell curve      between 500 and 700 entails 2 standard deviations and covers 47.7% chance

 Jan 18, 2017
 #2
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thank you!

 Jan 18, 2017

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