chapter: ESTIMATION 5. A bank officer claims that a new procedure has reduced the number of non-paid loans.To verify this claim, two random samples are taken from the loan records. The firstsample consists of 1500 loans, taken from the records with old procedure, has shownthat the number of non-paid loans is 75. Next, the second sample, consisting of 2000loans with new procedure has revealed that 80 are non-paid loans. Determine a 90%confidence interval for the true difference in the proportion of non-paid loans betweenthe old and new procedures.

Answered: A bank officer claims that a new…

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.2: Expected Value And Variance Of Continuous Random Variables

Problem 10E

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Using the data from the 2018 professional baseball season, the American League (AL) had 10 players bat over .300 out of 179 players who played at least 82 games. In the national League (NL), there were 10 players who batted over .300 out of 196 players who played at least 82 games. Find a 90% confidence interval for the difference in porportion of .300+ hitters in the AL and NL.
In a study of the relationship between birth order and college success, an investigator found that 126 in a sample of 180 college graduates were firstborn or only children. In a sample of 100 nongraduates of comparable age and socioeconomic background, the number of firstborn or only children was 54. Estimate the difference between the proportions of firstborn or only children in the two populations from which these samples were drawn. Use a 90% confidence interval and interpret your results.
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