Comparing Two Independent Population Means · Exercise 28
The U.S. Center for Disease Control reports that the mean life expectancy was 47.6 years for White people born in 1900 and 33.0 years for non-White people. Suppose that you randomly survey death records for people born in 1900 in a certain county. Of the 124 White people, the mean life span was 45.3 years with a standard deviation of 12.7 years. Of the 82 non-White people, the mean life span was 34.1 years with a standard deviation of 15.6 years. Conduct a hypothesis test to see if the mean life spans in the county were the same for White people and non-White people.
At a pre-conceived α = 0.05, what is your:
(a) Decision:
(b) Reason for the decision:
(c) Conclusion (write out in a complete sentence):
OpenStax, Introductory Business Statistics 2e · §10.1 Comparing Two Independent Population Means · Exercise 28
No hints for this one.
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