A sociologist is studying the effect of having children within the first two years of marriage on the divorce rate. Using hospital birth records, she selects a random sample of 200 couples that had a child within the first two years of marriage. Following up on these couples, she finds that 80 couples are divorced within five years. Use Scenario 8-4. Which of the following is closest to the sample size you would need to estimate p within + 2% with 90% confidence? Use 0.4 from the first sample as an approximation of p. 1624 O b 241 2309 O d 948

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 sociologist is studying the effect of having children within the first two years of marriage
on the divorce rate. Using hospital birth records, she selects a random sample of 200
couples that had a child within the first two years of marriage. Following up on these
couples, she finds that 80 couples are divorced within five years.
Use Scenario 8-4. Which of the following is closest to the sample size you would need to
estimate p within ± 2% with 90% confidence? Use 0.4 from the first sample as an
approximation of p.
O a
1624
O b
241
2309
O d
948
Transcribed Image Text:A sociologist is studying the effect of having children within the first two years of marriage on the divorce rate. Using hospital birth records, she selects a random sample of 200 couples that had a child within the first two years of marriage. Following up on these couples, she finds that 80 couples are divorced within five years. Use Scenario 8-4. Which of the following is closest to the sample size you would need to estimate p within ± 2% with 90% confidence? Use 0.4 from the first sample as an approximation of p. O a 1624 O b 241 2309 O d 948
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