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A Demographer Wants to Measure Life Expectancy in Countries 1

Question 21

Multiple Choice

A demographer wants to measure life expectancy in countries 1 and 2.Let A demographer wants to measure life expectancy in countries 1 and 2.Let and denote the mean life expectancy in countries 1 and 2,respectively.Specify the hypothesis to determine if life expectancy in country 1 is more than 10 years lower than in country 2. A) H<sub>0</sub>: µ<sub>1</sub>- µ<sub>2</sub> ≤ 10,H<sub>A</sub>: µ<sub>1</sub>- µ<sub>2</sub> > 10 B) H<sub>0</sub>: µ<sub>1</sub>- µ<sub>2</sub> ≥ 10,H<sub>A</sub>: µ<sub>1</sub>- µ<sub>2</sub> < 10 C) H<sub>0</sub>: µ<sub>1</sub>- µ<sub>2</sub> ≤ -10,H<sub>A</sub>: µ<sub>1</sub>- µ<sub>2</sub> > −10 D) H<sub>0</sub>: µ<sub>1</sub>- µ<sub>2</sub> ≥ -10,H<sub>A</sub>: µ<sub>1</sub>- µ<sub>2</sub> < −10 and A demographer wants to measure life expectancy in countries 1 and 2.Let and denote the mean life expectancy in countries 1 and 2,respectively.Specify the hypothesis to determine if life expectancy in country 1 is more than 10 years lower than in country 2. A) H<sub>0</sub>: µ<sub>1</sub>- µ<sub>2</sub> ≤ 10,H<sub>A</sub>: µ<sub>1</sub>- µ<sub>2</sub> > 10 B) H<sub>0</sub>: µ<sub>1</sub>- µ<sub>2</sub> ≥ 10,H<sub>A</sub>: µ<sub>1</sub>- µ<sub>2</sub> < 10 C) H<sub>0</sub>: µ<sub>1</sub>- µ<sub>2</sub> ≤ -10,H<sub>A</sub>: µ<sub>1</sub>- µ<sub>2</sub> > −10 D) H<sub>0</sub>: µ<sub>1</sub>- µ<sub>2</sub> ≥ -10,H<sub>A</sub>: µ<sub>1</sub>- µ<sub>2</sub> < −10 denote the mean life expectancy in countries 1 and 2,respectively.Specify the hypothesis to determine if life expectancy in country 1 is more than 10 years lower than in country 2.


A) H0: µ1- µ2 ≤ 10,HA: µ1- µ2 > 10
B) H0: µ1- µ2 ≥ 10,HA: µ1- µ2 < 10
C) H0: µ1- µ2 ≤ -10,HA: µ1- µ2 > −10
D) H0: µ1- µ2 ≥ -10,HA: µ1- µ2 < −10

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