Roview Test Submission: Final Exam...Take Test: Final Exam Part 1- PH-30...UntitledPreterm Delivery YesNo Total EBlackboard HelpQuestion Completion Status:QUESTION 13A clinical trial is run to investigate the effectiveness of an experimental drug in reducing preterm delivery to a drug consideredstandard care and to placebo. Pregnant women are enrolled and randomly assigned to receive either the experimental drug, thestandard drug or placebo. Women are followed through delivery and classified as delivering preterm (< 37 weeks) or not. The data areshown below. Is there a statistically significant difference inthe proportions of women delivering preterm among the three treatmentgroups? Run the test at a 5% level of significance. Give each of the following to receive full credit: 1) the appropriate nulland alternative hypotheses; 2) the appropriate test; 3) the decision rule; 4) the calculation of the test statistic; and 5) yourconclusion including a comparison to alpha or the critical value. You MUST show your work to receive full credit. Partial credit isavailable.Preterm DeliveryNoYesTotalExperimental DrugStandard DrugPlacebo3332|18404535131737Total83120For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).T T T3 (12pt)Arial11

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Asked Dec 13, 2019
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Roview Test Submission: Final Exam...
Take Test: Final Exam Part 1- PH-30...
Untitled
Preterm Delivery YesNo Total E
Blackboard Help
Question Completion Status:
QUESTION 13
A clinical trial is run to investigate the effectiveness of an experimental drug in reducing preterm delivery to a drug considered
standard care and to placebo. Pregnant women are enrolled and randomly assigned to receive either the experimental drug, the
standard drug or placebo. Women are followed through delivery and classified as delivering preterm (< 37 weeks) or not. The data are
shown below. Is there a statistically significant difference in
the proportions of women delivering preterm among the three treatment
groups? Run the test at a 5% level of significance. Give each of the following to receive full credit: 1) the appropriate null
and alternative hypotheses; 2) the appropriate test; 3) the decision rule; 4) the calculation of the test statistic; and 5) your
conclusion including a comparison to alpha or the critical value. You MUST show your work to receive full credit. Partial credit is
available.
Preterm Delivery
No
Yes
Total
Experimental Drug
Standard Drug
Placebo
33
32
|18
40
45
35
13
17
37
Total
83
120
For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).
T T T
3 (12pt)
Arial
11
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Roview Test Submission: Final Exam... Take Test: Final Exam Part 1- PH-30... Untitled Preterm Delivery YesNo Total E Blackboard Help Question Completion Status: QUESTION 13 A clinical trial is run to investigate the effectiveness of an experimental drug in reducing preterm delivery to a drug considered standard care and to placebo. Pregnant women are enrolled and randomly assigned to receive either the experimental drug, the standard drug or placebo. Women are followed through delivery and classified as delivering preterm (< 37 weeks) or not. The data are shown below. Is there a statistically significant difference in the proportions of women delivering preterm among the three treatment groups? Run the test at a 5% level of significance. Give each of the following to receive full credit: 1) the appropriate null and alternative hypotheses; 2) the appropriate test; 3) the decision rule; 4) the calculation of the test statistic; and 5) your conclusion including a comparison to alpha or the critical value. You MUST show your work to receive full credit. Partial credit is available. Preterm Delivery No Yes Total Experimental Drug Standard Drug Placebo 33 32 |18 40 45 35 13 17 37 Total 83 120 For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). T T T 3 (12pt) Arial 11

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Step 1

1)

The null and the alternative hypotheses used for testing are given below:

 

H0: There is no statistically significant difference in the proportion of women delivering preterm among the three treatment groups.

HA: There is statistical significant difference in the proportion of women delivering preterm among the three treatment groups

Step 2

2)

The chi-square test of independence can be used to test whether the proportion of women delivering preterm among the three group have a significant difference or not.

Step 3

3)

Before stating the decision rule, find the critical value.

Critical value:

The critical value for chi-square distribution with n-1 and...

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fx =CHISQ.INV.RT(0.05,2) F1 Н 5.991464547

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