Data set 1: ruptured abdominal aortic aneurisms

weekend= 1,559 cases , 655 deaths

weekday= 3,895 cases, 1,403 deaths

weekend is sample 1 and weekday is sample 2

Part Iclaim:The proportion of deaths (mortality rates) is greater on the weekend then weekday for this disease," at the 0.05 level of significance. a.) State the null and alternative hypotheses (as a mathematical statements) and indicate where the claim is (in the null or alternative).

Circle or highlight the correct sign, indicate where the claim is.

b.) Perform the test by finding the p-value (use your calculator, 2-PropZTest). Use data set 1.

c.) Make the appropriate decision to reject or fail to reject, Indicate why you made this decision.

d.) State the conclusion about the claim for this hypothesis test.

Data for Part II: Based on a study that appeared in an issue of Archives of Surgery.

Data Set 2:White Patients

Insured Patients:n = 162,984Insured Mortality Rate:4.2%

Uninsured Patients:n = 99,894Uninsured Mortality Rate:7.9%

Data Set3:African-American Patients

Insured Patients:n = 22,397Insured Mortality Rate:4.9%

Uninsured Patients:n = 49,852Uninsured Mortality Rate:11.4%

Data Set4:Hispanic Patients

Insured Patients:n = 15,873Insured Mortality Rate:6.3%

Uninsured Patients:n = 25,897Uninsured Mortality Rate:11.3%

You will need to calculate X in each case (for each race), for example for white patients x=(.042)(162984), round this to the nearest whole number

Make uninsured sample 1 and insured sample 2.

Notice in here they decided to separate by race, because there could be some hereditary predisposition to certain illness among different races, for example some races have a higher rate or heart decease, it makes sense to control for that, this way the only difference between the two groups you are comparing is insurance (whether they are insured or not, here insurance was isolated).

You can do the test first for the 3 races, make the decision to reject or fail to reject, then to make it easier you can just write one conclusion in the end for the three races. Just mention what the evidence indicates about the claim for White patients, African-American patients and Hispanic patients.

Part IIclaim: The proportion of deaths (mortality rates) is greater for uninsured patient than the insured patient, at a 0.05 level of significance.

Data Set 2 (white patients)

a.) State the null and alternative hypotheses (as mathematical statements) and indicate where the claim is (in the null or alternative).

Circle or highlight the correct sign, indicate where the claim is.

b.) Perform the test by finding the p-value (use your calculator, 2-PropZTest).

c.) Make the appropriate decision to reject or fail to reject, Indicate why you made this decision.

Data Set 3 (African-American patients)a.) State the null and alternative hypotheses (as mathematical statements) and indicate where the claim is (in the null or alternative) .

Circle or highlight the correct sign, indicate where the claim is.

b.) Perform the test by finding the p-value (use your calculator, 2-PropZTest).

c.) Make the appropriate decision to reject or fail to reject, Indicate why you made this decision.

Data Set 4 (Hispanic patients)a.) State the null and alternative hypotheses (as mathematical statements) and indicate where the claim is (in the null or alternative) .

Circle or highlight the correct sign, indicate where the claim is.

b.) Perform the test by finding the p-value (use your calculator, 2-PropZTest).

c.) Make the appropriate decision to reject or fail to reject, Indicate why you made this decision.

Conclusion for Part II: State the conclusion about the claim of this hypothesis test.You can summarize the conclusion about the claim mentioning white patients, African-American patients and Hispanic patients.