Question

We know that the average age of all automotive factory workers is 43 years with a standard deviation of 14.4 years. An automotive factory started an employee ownership program 10 years ago that gave employees 5,000.00 dollars in company stock every year if they passed a healthy and fit test every 6 months. You are asked to determine if the average age of automotive factory workers is still the same as the population. So you collect a random sample of 50 automotive factory workers and find that the average age for the sample is 47. Using an alpha of .05 and a nondirectional hypothesis, conduct a one-sample z-test and determine whether the sample is significantly different from the population.  For your calculations, round to the 3rd decimal place, and note that some of the numerical information is not needed.

		z = 1.217, and you determine that the sample IS significantly different from the population.
		z = 1.217, and you determine that the sample IS NOT significantly different from the population.
		z = 1.965, and you determine that the sample IS significantly different from the population.
		z = 1.965, and you determine that the sample IS NOT significantly different from the population.
		z = 2.638, and you determine that the sample IS significantly different from the population.
		z = 2.638, and you determine that the sample IS NOT significantly different from the population.

Answer 1

we can concclude that the sample is different from the population.

14.4) tCo니드 1.016918 1.965 you deteYntne the Sample ts Stgnitrcantly olstferest the population.