Question 12 Suppose a survey of randomly selected death records for white and nonwhite people born in 1900 from a certain county is conducted. Of the 112 whites surveyed, the mean life span was 47.5 years with a standard deviation of 12.6 years. Of 83 nonwhites, the mean life span was 37.3 years with a standard deviation of 14.2 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. Test the claim: a. Determine the null and alternative hypotheses. Ho: H?Hnw Ha H ?ν μπο b. Determine the test statistic. Round to four decimal places. t= c. Find the p-value. Round to 4 decimals. p-value d. Make a decision. O Reject the null hypothesis. O Fail to reject the null hypothesis. e. Write the conclusion. There is sufficient evidence to support the claim that whites and nonwhites have different mean life spans. There is not sufficient evidence to support the claim that whites and nonwhites have different mean life spans. Question Help: Video Submit Question C

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