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# Hospital Stays for Maternity Patients Health Care ISBN: 9780073386102 241

## Solution for problem 15 Chapter 9-2

Elementary Statistics: A Step by Step Approach 8th ed. | 8th Edition

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Problem 15

Hospital Stays for Maternity Patients Health Care Knowledge Systems reported that an insured woman spends on average 2.3 days in the hospital for a routine childbirth, while an uninsured woman spends on average 1.9 days. Assume two samples of 16 women each were used in both samples. The standard deviation of the first sample is equal to 0.6 day, and the standard deviation of the second sample is 0.3 day. At a _ 0.01, test the claim that the means are equal. Find the 99% confidence interval for the differences of the means. Use the P-value method. Source: Michael D. Shook and Robert L. Shook, The Book of Odds.

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#data analysis using hamilton data to predict y data=read.csv("hamilton.csv") #wewill check the performance of first-order model m1=lm(y~x1+x2, data) summary(m1) par(mfrow=c(1,3)) plot(data[,1], m1\$res) plot(data[,2],m1\$res) plot(fitted(m1),m1\$res) #I did not observe an obvious pattern in the residual plots #we will present the partial residual plots on x1 partial=m1\$res+coef(m1)*data[,1]...

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##### ISBN: 9780073386102

The full step-by-step solution to problem: 15 from chapter: 9-2 was answered by , our top Statistics solution expert on 01/15/18, 03:26PM. This textbook survival guide was created for the textbook: Elementary Statistics: A Step by Step Approach 8th ed., edition: 8. The answer to “Hospital Stays for Maternity Patients Health Care Knowledge Systems reported that an insured woman spends on average 2.3 days in the hospital for a routine childbirth, while an uninsured woman spends on average 1.9 days. Assume two samples of 16 women each were used in both samples. The standard deviation of the first sample is equal to 0.6 day, and the standard deviation of the second sample is 0.3 day. At a _ 0.01, test the claim that the means are equal. Find the 99% confidence interval for the differences of the means. Use the P-value method. Source: Michael D. Shook and Robert L. Shook, The Book of Odds.” is broken down into a number of easy to follow steps, and 109 words. This full solution covers the following key subjects: . This expansive textbook survival guide covers 67 chapters, and 1718 solutions. Since the solution to 15 from 9-2 chapter was answered, more than 229 students have viewed the full step-by-step answer. Elementary Statistics: A Step by Step Approach 8th ed. was written by and is associated to the ISBN: 9780073386102.

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