If a test has a mean of 500 and a standard deviation of 50 (and is normally distributed), what score marks the 15^th percentile?
a. On this same test, what proportion of students would be expected to receive scores between 475 and 550?
b. What scores fall at the extreme 10% of this distribution (two-tailed)?

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The Answer of If a test has a mean of 500 and a standard deviation of 50 (and is normally distributed), what score marks the 15^th percentile? a. On this same test, what proportion of students would be expected to receive scores between 475 and 550? b. What scores fall at the extreme 10% of this distribution (two-tailed)?

If a Test Has a Mean of 500 and a Standard