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What is the overall mean mortality rate for the two regions

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Reference no: EM131713764

Question: Hard water II. The data set from England and Wales also notes for each town whether it was south or north of Derby. Here are some summary statistics and a comparative boxplot for the two regions.

1642_Hard water.png

a) What is the overall mean mortality rate for the two regions?

b) Do you see evidence of a difference in mortality rates? Explain.

Reference no: EM131713764

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