Question: Gubser Welding, Inc., operates a welding service for construction and automotive repair jobs. Assume that the arrival of jobs at the companys office can be

Gubser Welding, Inc., operates a welding service for construction and automotive repair jobs. Assume that the arrival of jobs at the company’s office can be described by a Poisson probability distribution with an arrival rate of two jobs per 8-hour day. The time required to complete the jobs follows a normal probability distribution, with a mean time of 3.2 hours and a standard deviation of 2 hours. Answer the following questions, assuming that Gubser uses one welder to complete all jobs:

a. What is the mean arrival rate in jobs per hour?

b. What is the mean service rate in jobs per hour?

c. What is the average number of jobs waiting for service?

d. What is the average time a job waits before the welder can begin working on it?

e. What is the average number of hours between when a job is received and when it is completed?

f. What percentage of the time is Gubser’s welder busy?

Step by Step Solution

★★★★★

3.41 Rating (154 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a 28 hours 025 per hour b 132 hours 0312... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

148-M-S-Q-M (121).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Assume an investor's preferences can be described by a utility function which can be expressed in terms of wealth as U(W) = 20W -.5W?. The investor is considering 3 investments with the following...

A nonisothermal batch reactor can be described by the following equations dC/dt = - e(- 10/T + 273))C dT/dt = 1000e(- 10/T + 273))C 10(T - 20) where C is the concentration of the reactant and T in...

A magnetically suspended steel ball can be described by the linear equation The state variables are x1 = position and x2 = velocity, and both are measurable. Select a feedback so that the system is...

Gubser Welding, Inc., operates a welding service for construction and automotive repair jobs. Assume that the arrival of jobs at the company's office can be described by a Poisson probability...

Welding. Gubser Welding, Inc., operates a welding service for construction and automotive repair jobs. Assume that the arrival of jobs at the company s office can be described by a Poisson...

Gubser Welding, Inc., operates a welding service for construction and automotive repair jobs. Assume that the arrival of jobs at the company's office can be described by a Poisson probability...

Problem 15-27 (Algorithmic) Gubser Welding, Inc., operates a welding service for construction and automotive repair jobs. Assume that the arrival of jobs at the company's office can be described by a...

Gubser Welding, Inc., operates a welding service for construction and automotive repair jobs. Assume that the arrival of jobs at the company's office can be described by a Poisson probability...

Specify the alkene and reagents needed to synthesize each of the following diols. (a) (b) (Recemic) (c) (Recemic) OH OH OH OH

Find (1,-1, 1) (1, 2, 3). O A. (-5, -2, 3) OB. (-5, 2, 3) OC. 2 OD. (5, 2, -3) O E. (1, -2, 3)

22 Make a chart to show how different types of plant cells form tissues, which in turn form an organ. You could make a table of three columns with the headings Cells, Tissues and Organ to help you...

Write a short note on environmental degradation. (7) [B.Com (Hons.), 2011, 2012]

A frozen-food packer specifies the mean weight of a product as 200 g. The output is Normally distributed with a standard deviation of 15 g. A random sample of 20 has a mean of 195 g. Does this...

Hamil Sopa took a random sample of 60 invoices from his year's records. The mean value of invoices in this sample was 125.50 and the standard deviation was 10.20. What are the 90% and 95% confidence...

Sheila Brown times 60 people doing a job. The mean time is 6.4 minutes, with a standard deviation of 0.5 minutes. How long would it take the population to do this job?

Consider the following two mutually exclusive projects: Year Cash Flow (X) Cash Flow (Y) 0 $ 19,600 $ 19,600 1 8,750 9,900 2 8,900 7,700 3 8,700 8,600 Calculate the IRR for each project. (Do not...

1. Get Annual Reports for Home Depot and Lowes from web for 2014 and 2015 (they may not end in the same month and thats fine). These reports will have voluminous data but you only want to focus on...

Required information [The following information applies to the questions displayed below] A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a...