As part of an infrastructure planning exercise, a city council analyst summarised annual household income and the number of motor vehicles owned for a random sample of households. The results are as follows. Using the chi-square test, determine whether the number of vehicles owned depends on the household?s income. Use ? = 0.05. Explain your test result.

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Household income $20 000- Under $20 000 $50 000- Number of vehicles $100000 $99 999 and above $49999 20 12 18 13 10 30 15 1-2 80 40 3 or more gకి