Mathematics, 25.11.2019 20:31 1233042260
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: μ > 40,000 ha: μ ≤ 40,000. b. h0: μ ≥ 40,000 ha: μ < 40,000. c. h0: μ < 40,000 ha: μ ≥ 40,000. d. h0: μ ≤ 40,000 ha: μ > 40,000.
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