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3.The distribution of the test scores of the final exam for POLS 2311 are normally distributed with a mean of 145 and a standard deviation

3.The distribution of the test scores of the final exam for POLS 2311 are normally distributed with a mean of 145 and a standard deviation of 12.5 points.

Find the Z scores for the test of 120 and 170 and the use the empirical rules to explain the answer.

About 99.7% of the students received scores between which ranges?

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