Most truck industry carriers operate within a single province or region. About 1% operates across multiple jurisdictions, including nationally. Comparing years ranked by total carrier activity (from the period 1984-94) and ranked numbers of multi-jurisdiction carriers per year, assess whether the number of these carriers and the year sequence are related.

Use the rank correlation coefficient to test the claim of no correlation between the two variables. Use a significance level of α = 0.05.

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7 2 9 11 10 3 5 4 8 6 Years Numbers of carriers 7 2 9.5 11 1 8 3 9.5 5.5 4 5. Based on data from Transport Canada.