Question

Is the transportation mode used to ship goods independent of type of industry? Suppose the following contingency table represents frequency counts of types of transportation used by the publishing and the computer hardware industries. Analyze the data by using the chi-square test of independence to determine whether type of industry is independent of transportation mode. Let α = 0.05.

Transportation Mode

Industry

	Air	Train	Truck
Publishing	31	12	39
Computer Hardware	5	6	24

Appendix A Statistical Tables

(Round the intermediate values to 2 decimal places. Round your answer to 2 decimal places.)

Observed χ2 =
Transportation mode is                                                           not independent or independent of industry.

Answer 1