The Average Life Expectancy of Tires Produced by the Whitney $\mu$

question 1

Multiple Choice

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 its tires has increased.In order to convince others of the validity of management's belief, the correct set of hypotheses is

• A)H₀: \(\mu\)< 40,000; H_a: \(\mu\) \(\ge\) 40,000
• B)H₀: \(\mu\) \(\le\) 40,000; H_a: \(\mu\) > 40,000
• C)H₀: \(\mu\) > 40,000; H_a: \(\mu\) \(\le\) 40,000
• D)H₀: \(\mu\) \(\ge\) 40,000; H_a: \(\mu\) < 40,000
• E)H₀: \(\mu\) = 40,000; H_a: \(\mu\) ≠ 40,000

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