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5. In the past, 44% of those taking a public accounting qualifying exam have passed the exam on their first try. Lately, the availability of exam preparation books and tutoring sessions may have improved the likelihood of an individual's passing on his or her first try. In a sample of 250 recent applicants, 130 passed on their first attempt. At the 0.025 level of significance, can we conclude that the proportion passing on the first try has increased? Construct a 95% confidence interval for a and using that interval, can you judge whether the proportion passing on the first try has increased?

5. In the past, 44% of those taking a public accounting qualifying exam have passed the exam on their first try. Lately, the availability of exam preparation books and tutoring sessions may have improved the likelihood of an individual's passing on his or her first try. In a sample of 250 recent applicants, 130 passed on their first attempt. At the 0.025 level of significance, can we conclude that the proportion passing on the first try has increased? Construct a 95% confidence interval for a and using that interval, can you judge whether the proportion passing on the first try has increased?

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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5. In the past, 44% of those taking a public accounting qualifying exam have passed the exam on their first try. Lately, the availability of exam preparation books and tutoring sessions may have improved the likelihood of an individual's passing on his or her first try. In a sample of 250 recent applicants, 130 passed on their first attempt. At the 0.025 level of significance, can we conclude that the proportion passing on the first try has increased? Construct a 95% confidence interval for a and using that interval, can you judge whether the proportion passing on the first try has increased?
Transcribed Image Text:5. In the past, 44% of those taking a public accounting qualifying exam have passed the exam on their first try. Lately, the availability of exam preparation books and tutoring sessions may have improved the likelihood of an individual's passing on his or her first try. In a sample of 250 recent applicants, 130 passed on their first attempt. At the 0.025 level of significance, can we conclude that the proportion passing on the first try has increased? Construct a 95% confidence interval for a and using that interval, can you judge whether the proportion passing on the first try has increased?
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