WileyPLUS statistics: unlocking the Power of Data, 1st Edition, wileypuus custom

Question

WileyPLUS statistics: unlocking the Power of Data, 1st Edition, wileypuus custom Course for University of Kentucky sutietial Methode And Motivatsens sma Home Read, Study & Practice Assignment Gradebook Assignment open Assignment ASSIGNMENT Chapter 6, Section 11, Exercise 233 RESOURCES Modenbach Homes for Sale Summer12017 HW9 Chapter 6 Section 7. This question refers to the dataset HomesForsale, which has data on houses available for sale in three Mad states (N. N,and PA) wer as caroni (CA). Table 1 summary statistics for each of the four states, with prices given in thousands of dollars (since n 30 we ask you to use the f 'distribution here despite the fact that the data ere quete skewed. In Chapter 6, Section 7, practice, we might have enough concern about the skewness to choose to use bootstrap methods instead.) Chapter 6, Section 7. Exercise 159 Chapter 6 Section 7, State Chapter 6, Section 8. 30 565.6 6976 New York Exercise 170 R Chapter 6, Section 8, New Jersey 30 388.5 224,7 Chapter 6, Section 8. 2496 Chapter 6, Section 8. 30 715.1 1112.3 Exercise 175 Table 1 Mean housing prices for four states Chapter 6, Section 8, Find a 95% confidence interval for the difference in mean housing price between California and New York, Hea uny. Chapter 6, Section 9, Exercise 189 Click bere for the dataset associated with this question. Chapter 6, Section 9, Round your answers to the nearest integer Chapter 6, Section 9e thousand to 95% confidence interval is El Chapter 6, Section License Agreement l Privacy Policy I 2000-2017 Dohn Wiley sons Jnc All Rights Reserved. A Division of lohn Sons, Inc.

Explanation / Answer

Standard Error, SE= sqrt [ s21 / n1 + s22 / n2 ] = [1112.32/30 + 697.62/30) = 239.7121
Degree of freedom, DF = (s12/n1 + s22/n2)2 / { [ (s12 / n1)2 / (n1 - 1) ] + [ (s22 / n2)2 / (n2 - 1) ] } = 48.757 = 49

tcrit = +/- 2.0096
CA - NY = 715.1 - 565.6 = 149.5

95% CI = CA - NY +/- tcrit*SE = 149.5 +/- 2.0096*239.7121 = (-332.22, 631.23)

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