Question

Asked Oct 20, 2019

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The scores of students on a standardized test form a normal distribution with a mean of 300 and a standard deviation of 40. Using the fact that the middle 50% of the data falls within .67 standard deviations from the mean, find the lower and upper quartile scores for this test.

Step 1

It is given that middle 50% of the data falls within 0.67 standard deviations from mean.

That is, 50% lie...

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