Question

The average life expectancy of tires produced by the Whitney Tire Company has been 40,000 miles. Management believes that due to a new production process, the life expectancy of their tires has increased. In order to test the validity of their 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

Answer 1

Answer:

The average life expectancy of tires produced by the Whitney Tire Company has been 40,000 miles Management believes that due to a new production process, the life expectancy of their tires has increased. In order to test the validity of their belief; the correct set of hypotheses is HO: / 240,000 Ha: p < 40,000 b.