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A random sample of 100 recorded deaths in the United States during the past year showed an average life span of 71.8 years. Assumi

By Nevaeh

A random sample of 100 recorded deaths in the United States during the past year showed an average life span of 71.8 years. Assuming a population standard deviation of 8.9 years, does this seem to indicate that the mean life span today is greater than 70 years? Use a 0.05 level of significance

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Nevaeh

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