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The AAT is a standardized test with a known normal distribution having a mean of 400...

The AAT is a standardized test with a known normal distribution having a mean of 400 and a standard deviation of 20.

Round your answers to 2 decimal places.

a) What percentage of people would you expect to score 340 or lower? Enter you answer in accordance to the item a) of the question statement%

b) What percentage of people would you expect to score 430 or higher? Enter you answer in accordance to the item b) of the question statement%

c) What percentage of people would you expect to score between 350 and 450? Enter you answer in accordance to the item c) of the question statement%

Math   Statistics-And-Probability   
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