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How many scores will be less than 250

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Sats scores in the US are normally distributed with the mean score of 520 with a standard deviation of 100. Answer the following:

A. How many scores will be less than 250?

B. If you have 3000 students take the exam how many of those students will have a score less than 250?

C. What z score cuts off the bottom 25% of the test score?

Reference no: EM132401526

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