33 points) A research report on a prospective study looking at the association between hypotensive status (hypotension vs. normal) and death (died vs. did not die) states that: "A comparison of the 190 normal patients with the 150 patients with hypotension shows that only 10% of the former group died as compared to 30% of the latter."

(4 points) Put these data into a 2 x 2 contingency table.Be sure to include the marginal frequencies.

(4 points) Calculate the sample risk difference for death comparing hypotensive patients to normal patients and provide an interpretation

(5 points) Construct a 95% confidence interval for the risk difference and provide an interpretation.

(4 points) Calculate the sample relative risk for death comparing hypotensive patients to normal patients and provide an interpretation.

(16 points) Use Pearson's Chi-Squared Test to test for an association between blood pressure (hypotensive vs. normal) and vital status (died vs. did not die).Use a significance level of 0.05.Steps 1 - 3 are completed for you.You need to complete steps 4 - 7.In your conclusion (step 7) be sure to indicate the direction of the association between blood pressure and vital status.

Define the parameter(s) of interest.

RR = relative risk for death comparing hypotensive to normal subjects.

State the null and alternative hypotheses.

H0:There is no association between blood pressure and death.(RR = 1)

H1:There is an association between blood pressure and death.(RR 1)