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2. An independent research group is interested to show that the percentage of babies delivered through Cesarian Section is decreasing. For the past years, 20% of the babies were delivered through Cesarian Section. The research group randomly inspects the medical records of 144 births and finds that 25 of the births were by Cesarian Section. Can the research group conclude that the percent of births by Cesarian Section has decreased at 5% level of significance?

2. An independent research group is interested to show that the percentage of babies delivered through Cesarian Section is decreasing. For the past years, 20% of the babies were delivered through Cesarian Section. The research group randomly inspects the medical records of 144 births and finds that 25 of the births were by Cesarian Section. Can the research group conclude that the percent of births by Cesarian Section has decreased at 5% level of significance?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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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2. An independent research group is interested to show that the percentage of babies delivered through Cesarian Section is decreasing. For the past years, 20% of the babies were delivered through Cesarian Section. The research group randomly inspects the medical records of 144 births and finds that 25 of the births were by Cesarian Section. Can the research group conclude that the percent of births by Cesarian Section has decreased at 5% level of significance?
Transcribed Image Text:2. An independent research group is interested to show that the percentage of babies delivered through Cesarian Section is decreasing. For the past years, 20% of the babies were delivered through Cesarian Section. The research group randomly inspects the medical records of 144 births and finds that 25 of the births were by Cesarian Section. Can the research group conclude that the percent of births by Cesarian Section has decreased at 5% level of significance?
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