c. Find the p-value. Round to 4 decimals. p-value = d. Make a decision. O Fail to reject the null hypothesis. O Reject the null hypothesis. e. Write the conclusion. O There is not sufficient evidence to support the claim that whites and nonwhites have different mean life spans. O There is sufficient evidence to support the claim that whites and nonwhites have different mean life spans.

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c. Find the p-value. Round to 4 decimals.
p-value =
d. Make a decision.
O Fail to reject the null hypothesis.
O Reject the null hypothesis.
e. Write the conclusion.
O There is not sufficient evidence to support the claim that whites and nonwhites have different
mean life spans.
O There is sufficient evidence to support the claim that whites and nonwhites have different
mean life spans.
Transcribed Image Text:c. Find the p-value. Round to 4 decimals. p-value = d. Make a decision. O Fail to reject the null hypothesis. O Reject the null hypothesis. e. Write the conclusion. O There is not sufficient evidence to support the claim that whites and nonwhites have different mean life spans. O There is sufficient evidence to support the claim that whites and nonwhites have different mean life spans.
The U.S. Center for Disease Control reports that in year 1900, the mean life expectancy is 47.6 years for
whites and 33 years for nonwhites. (Click here for reference data ) Suppose a survey of randomly selected
death records for white and nonwhite people born in 1900 from a certain county is conducted. Of the 124
whites surveyed, the mean life span was 46.9 years with a standard deviation of 12.4 years and of the 89
nonwhites, the mean life span was 36.2 years with a standard deviation of 15.3 years. Conduct a hypothesis
test at the 0.05 level of significance to determine whether there was no difference in mean life spans in
the county for whites and nonwhites in year 1900.
Transcribed Image Text:The U.S. Center for Disease Control reports that in year 1900, the mean life expectancy is 47.6 years for whites and 33 years for nonwhites. (Click here for reference data ) Suppose a survey of randomly selected death records for white and nonwhite people born in 1900 from a certain county is conducted. Of the 124 whites surveyed, the mean life span was 46.9 years with a standard deviation of 12.4 years and of the 89 nonwhites, the mean life span was 36.2 years with a standard deviation of 15.3 years. Conduct a hypothesis test at the 0.05 level of significance to determine whether there was no difference in mean life spans in the county for whites and nonwhites in year 1900.
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