The Mechanical Foundation reports that the average cost of project maintenance is 24,125. To see if the average cost of
Posted: Wed Dec 08, 2021 5:14 am
The Mechanical Foundation reports that the average cost of project maintenance is 24,125. To see if the average cost of maintenance is different at a particular project, a researcher selects a random sample of 38 projects and found that the average cost of their maintenance is 24,961. The standard deviation of the population is $2,411. Find the calculated value of Z in order to make a decision based on a given critical value (Use 3 decimals).