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StatisticsQ&A Library4. A clinical trial is run to investigate the effectiveness of an experimental drug in reducing pretermdelivery to a drug considered standard care and to a placebo. Pregnant women are enrolled andrandomly assigned to receive either the experimental drug, the standard drug or a placebo. Women arefollowed through delivery and classified as delivering preterm (37 weeks) or not. The data are shownbelowExperimental DrugStandard DrugPreterm DeliveryPlaceboYes172335No837765Is there a statistically significant difference in the proportions of women delivering preterm among thethree treatment groups? Run the test at a 5% level of significanceQuestion

Asked Dec 4, 2019

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Question 4

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Step 1

Null Hypothesis:

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

Alternative Hypothesis:

There is statistically significant difference in the proportions of women delivering preterm among the three treatment groups.

Procedure for calculating chi-square test statistic using MegaStat:

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