Please answer all questions below

Question 6 1 pts Benny operates a gardening service to customers. The services provided include mowing, fertilising, weeding, pruning, garden design and a spring tidy up. The diagram below is used to describe part of the database model used by Just Benny. Refer to the diagram and indicate which of the following statements is TRUE A ' 0 Each service item is for only one customer only 0 An invoice detail is for many customers 0 An invoice can have many invoice details 0 Many customers are included in the one invoice detail The purpose of this exercise is to discuss the situation facing a manager and help her determine how many servers to use and what the characteristics of the system will be. Endeavor Communications, a long distance provider, is reevaluating its account management department for handling customer service questions and requests. During the 6:00 pm to 10:00pm time period, past data hat calls to the account management department occur at an average rate of one call every 6.5 minutes. A study of past service times indicate that the average time to process a caller's question/request is 4.3 minutes. Like other phone systems, when a call comes in and all the servers are busy, the caller hears a message telling them to hold until the next server is available Top management at Endeavor Communications understands that the staffing decision involves the analysis of trade-offs. Increasing the number of servers will reduce the waiting times and increase the probability of immediate service at a higher cost with more idle time for the servers. Management has decided that the GOAL of the account management department is to immediately answer and service at least 90% of the incoming calls during the busiest time period of 6:00 to 10:00pm. They have asked you to determine the staffing level that will help them meet this goal. Also, they'd like you to provide your own recommendations. 1. What are the arrival and service rates in Calls per MINUTE? Use the spreadsheet to calculate these: A. (calls per minute) = (calls per minute) = 2. Since you are not required to perform the calculations in the case of multiple servers, you are provided with these results in the table that follows. You DO need to determine the information for the case of one server and RHO for 2 and 3 servers, Please fill in the chart below based on the numbers you calculate using your EXCEL FILE which can be found under LabEx Files on the course webpage. USE THREE DECIMAL PLACES IN ALL PROBABILITIES Servers 2 3 % Time Server Busy (rho) Probability of 0.503 0.515 0.333 0.341 0.110 JAWN-O 0.113 0.036 0.025 0.012 0.005 0.0003 0.001 0.00003 0.0003 In the system CUSTOMERS CUSTOMERS CUSTOMERS Number in System n(s) 0.74 0.67 Number in Line n(0) 0.08 0.01 TIME (Minutes) TIME (Minutes) TIME (Minutes) Time in System t(s) 4.83 4.36 Time in Line t() 0.53 0.06 TIME (Seconds) TIME (Seconds) TIME (Seconds) Time in System ((s) 289.7 261.5 Time in Line t() 31.7 3.5 These may be helpful----ONE SERVER FORMULAS: Pa = (1-p)p P. Vu ns= 2/(p=1) ni= p[2/ (H-X)]= phs ts = 1/ (H-1) to= p[1/ (H-X)]=pts14. You are asked to conduct an interview of 6 randomly selected employees at your company to answer insurance questions. Use the random digit table starting at line 139 to choose 6 of the following individuals to be interviewed. Agarwal Anderson Baxter Bonds Bowman Castillo Cross Dewald Fernandez Fleming Gates Goel Gomez Hernandez Huang Kim Liao Mourning Naber Peters Pliego Puri Richards Rogers Santiago Shen Vega WangWhich statement about the la fiber is NOT correct? O it excites spinal inhibitory interneurons to inhibit alpha-motoneurons to the antagonist muscle (reciprocal inhibition) O its steady-state firing rate is proportional to the length of the muscle it innervates O if the muscle is rapidly stretched, la fibers from that muscle have an initial rapidly-adapting response that is proportional to the rate of muscle stretch its peripheral end wraps around the equatorial region of the intrafusal muscle fiber it has monosynaptic inhibitory synapses with a-motoneurons innervating the same muscle so as to prevent the muscle from over-contracting Question 27 1 pts Remembering how to mount and ride a bicycle is an example of: classical conditioning LTD (long term depression) working memory declarative memory procedural memoryQuestion 4 (1 point) A projection of costs and returns associated with the production of an enterprise for some future period (e.g. the coming year) for a given farm or business. Profitability forecast Enterprise budget Cash flow analysis Business plan Question 5 (1 point) Profitability and cash flow are essentially the same thing. True False