A revenue department is under orders to reduce the time small business owners spend filling out pension form ABC-5500. Previously the average time spent on the form was 5.7 hours. In order to test whether the time to fill out the form has been reduced, a sample of 84 small business owners who annually complete the form was randomly chosen, and their completion times recorded. The mean completion time for ABC-5500 form was 5.1 hours with a population standard deviation of 1.8 hours. In order to test that the time to complete the form has been reduced, state the appropriate null and alternative hypotheses. A) H0: μ = 5.7 Ha: μ ≠ 5.7 B) H0: μ = 5.7 Ha: μ 5.1 Ha: μ 5.1

Question

A revenue department is under orders to reduce the time small business owners spend filling out pension form ABC-5500. Previously the average time spent on the form was 5.7 hours. In order to test whether the time to fill out the form has been reduced, a sample of 84 small business owners who annually complete the form was randomly chosen, and their completion times recorded. The mean completion time for ABC-5500 form was 5.1 hours with a population standard deviation of 1.8 hours. In order to test that the time to complete the form has been reduced, state the appropriate null and alternative hypotheses. A) H0: μ = 5.7 Ha: μ ≠ 5.7 B) H0: μ = 5.7 Ha: μ < 5.7 C) H0: μ > 5.1 Ha: μ < 5.1 D) H0: μ = 5.1 Ha: μ > 5.1

anonymous · Answer

your asking how to find the (mean) or average using a calculator? this question is a bit confusing

anonymous · Answer

its find the p-value for the indicated hypothesis test with the given standardized test statistic ,z. decide whether to reject Ho for the given level of significance a: 
right tailed test  with test statistic z=1.67  and a=.02

anonymous · Answer

okay.. lol i have no clue. sorry. i tried. lol

anonymous · Answer

umm thank