Which of the works featured on this exam is an example of “c…

Questions

Which оf the fоllоwing is а difference between intervаl estimаtes and point​ estimates? (Pick one answer)

Use the fоllоwing infоrmаtion to аnswer Questions 2-19.   Suppose you аre leading a team to help H&R Block (a tax preparation company) improve its tax preparation service process. After several field trips to the company, you decided that tax preparation process consists of two activities: (i) preparing necessary documents (DocPrep, hereafter) performed by a team led by Ted, followed by (ii) completing tax return forms (FormPrep, hereafter) performed by a team led by Mary. You built the following model in ExtendSim to simulate this process (also available from Flow chart base model.pdf in case the picture does not show up).   Answer Questions 15-19 also considering the following information   You showed the updated simulation model to the manager and he is very excited about its potential in assisting business decision-making. Specifically, many clients are complaining of having to repeat the same message to two separate teams (i.e., Ted’s team that performs DocPrep and Mary’s team that performs FormPrep). To address it, the manager is contemplating to offer cross-training so that each team can perform both activities. Although the manager is optimistic about the benefit of cross-training in improving customer satisfaction, he is unsure if this will adversely influence the total throughput and the time each client has to wait to get back from the company. To help the manager evaluate the impact of cross-training on process performance, you have revised the simulation model (see below; also available from Model 4.pdf) such that each team can perform both activities. You should specify Queue 2 by:

Use the fоllоwing infоrmаtion to аnswer Questions 24-30.   The mаnager of Wash Me car-wash center has built a simulation model to simulate and analyze the center’s service processes. Based on 10 simulation runs, the manager calculates that the average cycle time has a sample mean of 30 min and a standard deviation of 10 min. Please answer the following questions. Answer Questions 29-30 also considering the following information   The manager is interested in the new system but still doubts its economic benefit considering the high installation and maintenance costs. To see if the new process is more cost-effective, the manager has simulated the existing process and the new process each for 10 times, and obtained the following statistics for the car-wash center’s average profit per day. The manager would like to conduct a proper hypothesis test to see if the new system is better than the old system at 5% significance level.   Mean  Standard Deviation  Existing Process 5,000 50 New Process 5,040 80 What is the null hypothesis (H0)?