MyLab Statistics with Pearson eText -- Standalone Access Card -- for Essentials of Statistics

6th Edition

ISBN: 9780134870113

Author: Mario F. Triola

Publisher: PEARSON

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Chapter 11.3, Problem 8BSC

In Exercises 5-16, use analysis of variance for the indicated test.

8. Birth Weights Data Set 4 “Births” in Appendix B lists birth weights from babies born at Albany Medical Center, Bellevue Hospital in New York City, Olean General Hospital, and Strong Memorial Hospital in Rochester, New York. After partitioning the birth weights according to the hospital, we get the StatCrunch display shown here. Use a 0.05 significance level to test the claim that the different hospitals have different mean birth weights. Do birth weights appear to be different in urban and rural areas?

Chapter 11.3, Problem 8BSC, In Exercises 5-16, use analysis of variance for the indicated test. 8. Birth Weights Data Set 4

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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Chapter 11.3, Problem 7BSC

Chapter 11.3, Problem 9BSC

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Chapter 11 Solutions

MyLab Statistics with Pearson eText -- Standalone Access Card -- for Essentials of Statistics

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Solution Summary: The author concludes that there is no evidence that the different hospitals have different mean birth weights.

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