Calculate the value of the test statistic and the p-value

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Reference no: EM131798020

An engineer examines the relationship between the w eight of a car and its average miles per gallon (MPG). For a sample of 100 cars, he calculates a Spearman rank correlation coefficient of - 0.60.

a. Specify the competing hypotheses in order to determine whether a negative relationship exists between a car's weight and its average MPG.

b. Assume that the distribution of rs is approximately normal. Calculate the value of the test statistic and the p-value.

c. At the 5% significance level, are the variables negatively related? Explain.

Reference no: EM131798020

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