A labour specialist is analyzing the numbers of work stoppages in the transportation industry. She claims that,

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A labour specialist is analyzing the numbers of work stoppages in the transportation industry. She claims that, in general, 10% of stoppages involve air transport, 10% involve rail transport, 20% water transport, and 60% road-based transport (including trucks, buses, and taxis). Based on the table below, drawn from a random selection of years from 1961 to 1999, test the specialist's claim. Use the 0.05 level of significance.
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Elementary Statistics

ISBN: 9780321225979

3rd Canadian Edition

Authors: Mario F. Triola

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