A research report on a prospective study states that: “A comparison of the 90 normal patients with the 50 patients with hypotension shows that only 3.33% of the former group died as compared to 30% of the latter.” Put these data into a 2x2 contingency table. E- HypotensionHealthyTotalDeath15318No death3587122Total5090140 Calculate the sample risk difference, construct a 95% confidence interval, and provide an interpretation. Calculate the sample relative risk, construct a 95% confidence interval, and provide an interpretation. Calculate the sample odds ratio, construct a 95% confidence interval, and provide an interpretation. Test the significance of blood pressure as a prognostic sign using Pearson’s Chi-Squared Test. Be sure to provide the following: Define the parameter(s) of interest.State the null and alternative hypotheses.State the significance level.State what type of test you will perform and why you chose to use the test.State and check any necessary assumptions. Check assumptions by hand showing all calculations.State your test statistic and its null distribution.Give the output of the hypothesis test from R. Verify the calculation of the test statistic by hand. You do not have to verify the P-value by hand. State the decision rule.State your conclusion in the context of the problem. Be sure to include the P-value.

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Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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A research report on a prospective study states that: “A comparison of the 90 normal patients with the 50 patients with hypotension shows that only 3.33% of the former group died as compared to 30% of the latter.”

Put these data into a 2x2 contingency table.

	E- Hypotension	Healthy	Total
Death	15	3	18
No death	35	87	122
Total	50	90	140

Calculate the sample risk difference, construct a 95% confidence interval, and provide an interpretation.

Calculate the sample relative risk, construct a 95% confidence interval, and provide an interpretation.

Calculate the sample odds ratio, construct a 95% confidence interval, and provide an interpretation.

Test the significance of blood pressure as a prognostic sign using Pearson’s Chi-Squared Test. Be sure to provide the following:

Define the parameter(s) of interest.
State the null and alternative hypotheses.
State the significance level.
State what type of test you will perform and why you chose to use the test.
State and check any necessary assumptions. Check assumptions by hand showing all calculations.
State your test statistic and its null distribution.
Give the output of the hypothesis test from R. Verify the calculation of the test statistic by hand. You do not have to verify the P-value by hand.
State the decision rule.
State your conclusion in the context of the problem. Be sure to include the P-value.

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