The U.S. Center for Disease Control reports that in year 1900, the mean life expectancy is 48 years for whites and 46.9 years for nonwhites with a stanard deviation of 11.1 years and the nonwhites had a stanard deviation of 15.6 years. Suppose the representative populations were 29,000 whites and 96,000 nonwhites. Conduct a hypothesis test at the 0.1 level of significance to determine whether there was no difference in mean life spans in the county for whites and nonwhites in year 1900. Preliminary: Is nw≥30 and nnw≥30 ? Yes No Test the claim: Determine the null and alternative hypotheses. H0H0: μw μnw HaHa: μw μnw Determine the test statistic. Round to four decimal places. z= Find the pp-value. Round to 4 decimals. pp-value = Make a decision. Reject the null hypothesis. Fail to reject the null hypothesis. Write the conclusion. There is not sufficient evidence to support the claim that whites and nonwhites have different mean life spans. 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 48 years for whites and 46.9 years for nonwhites with a stanard deviation of 11.1 years and the nonwhites had a stanard deviation of 15.6 years. Suppose the representative populations were 29,000 whites and 96,000 nonwhites. Conduct a hypothesis test at the 0.1 level of significance to determine whether there was no difference in mean life spans in the county for whites and nonwhites in year 1900. Preliminary: Is nw≥30 and nnw≥30 ? Yes No Test the claim: Determine the null and alternative hypotheses. H0H0: μw μnw HaHa: μw μnw Determine the test statistic. Round to four decimal places. z= Find the pp-value. Round to 4 decimals. pp-value = Make a decision. Reject the null hypothesis. Fail to reject the null hypothesis. Write the conclusion. There is not sufficient evidence to support the claim that whites and nonwhites have different mean life spans. There is sufficient evidence to support the claim that whites and nonwhites have different mean life spans.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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Question
The U.S. Center for Disease Control reports that in year 1900, the
Preliminary:
Is nw≥30 and nnw≥30 ?
- Yes
- No
Test the claim:
- Determine the null and alternative hypotheses.
H0H0: μw μnw
HaHa: μw μnw - Determine the test statistic. Round to four decimal places.
z= - Find the pp-value. Round to 4 decimals.
pp-value = - Make a decision.
- Reject the null hypothesis.
- Fail to reject the null hypothesis.
- Write the conclusion.
- There is not sufficient evidence to support the claim that whites and nonwhites have different mean life spans.
- There is sufficient evidence to support the claim that whites and nonwhites have different mean life spans.
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