SOLUTION: 7. 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
Algebra ->
Probability-and-statistics
-> SOLUTION: 7. 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
Log On
Question 820584: 7. 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.
Preterm Delivery Experimental Drug Standard Drug Placebo
Yes 17 23 35
No 83 77 65
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
You can put this solution on YOUR website! Women are followed through delivery and classified as delivering preterm (< 37 weeks) or not. The data are shown below.
Preterm Delivery Experimental Drug Standard Drug Placebo
Yes 17 23 35
No 83 77 65
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
-----
Ho: The rows have the same proportions
Ha: The proportions are different
======
I ran a Chi=Square program against the data and got the following::
test stat:: Chi-Sq = 8.9600
p-value = 0.0113
df = 2*1 = 2
---------------
Conclusion:Since the p-value is less than 5%, reject Ho.
Conclusion: There is a statistical difference in the proportions.
============
Cheers,
Stan H.
=================
(