Asked by Anonymous

The average score on a standardized test is 500 points with a standard deviation of 50 points. If 2,000
students take the test at a local school, how many students do you expect to score between 450 and 550
points?
Answered by PsyDAG
Z = (score-mean)/SD

Calculate Z and find its proportion in table in the back of your stats book labeled "areas under normal distribution". Convert proportion to number of students.
Answered by lola
im looking for the answer!!!
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