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RENCEE72 RENCEE72
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6 years ago
The average life expectancy of tires produced by Whitney Tire Company has been 40,000 miles. Management believes that due to a new production process, the life expectancy of its tires has increased. In order to test the validity of this belief, the correct set of hypotheses is _____.
 a. H0:  < 40,000 Ha:   40,000
  b. H0:   40,000 Ha:  > 40,000
  c. H0:  > 40,000 Ha:   40,000
  d. H0:   40,000 Ha:  < 40,000
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ccoppccopp
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