Statistics Solutions

[Solution Library] Testing for a Linear Correlation. In Exercises 13-28, construct a scatterplot, find the value of the linear correlation coefficient r and find the

Question: Testing for a Linear Correlation. In Exercises \(13-28\), construct a scatterplot, find the value of the linear correlation coefficient \(r\) and find the critical values \(r_c\) from Table A-6 using \(\alpha=0.05\). Determine whether there is sufficient evidence to support a claim of a linear correlation between the two variables.

CPI and subway Fare The paired values of the Consumer Price Index (CII) and Cost of subway fare from Table 10-1 in the Chapter Problem are listed below. Is there a linear correlation between the CPI and subway fare?

CPI Cost of Subway fare
30.2 0.15
48.3 0.35
112.3 1
162.2 1.35
191.9 1.5
197.8 2

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