The Average Manufacturing Work Week in Metropolitan Chattanooga Was 40

Multiple Choice

The average manufacturing work week in metropolitan Chattanooga was 40.2 hours last year. It is believed that the recession has led to a reduction in the average work week. To test the validity of this belief, the hypotheses are

A) H₀: μ < 40.2 H_a: μ ≥ 40.2.
B) H₀: μ ≥ 40.2 H_a: μ < 40.2.
C) H₀: μ > 40.2 H_a: μ ≤ 40.2.
D) H₀: μ = 40.2 H_a: μ ≠ 40.2.