Question

The average manufacturing work week in a particular city was 40.6 hours last year. It is believed that a recession has led to a reduction in the average work week. To test the validity of this belief, which is the correct hypotheses?

H0: μ ≥ 40.6 Ha: μ < 40.6

H0: μ < 40.6 Ha: μ ≥ 40.6

H0: μ = 40.6 Ha: μ ≠ 40.6

H0: μ > 40.6 Ha: μ ≤ 40.6

Answer 1

Answer Date: 31/07/2020 To test the hypothesis is that the average manufacturing work week in a particular city was reduction 40.60 hours last year. The null and alternative hypothesis is, H: 12 40.60 H2:4< 40.60 The hypothesis is left-tailed test. The option (2) is incorrect due to the null and alternative hypothesis sign is interchange. The option (3) is incorrect due to the hypothesis is two-tailed test instead of left-tailed hypothesis. The option (4) is incorrect due to the null and alternative hypotheses are irrelevant. The correct answer is 1.