Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Question: The Johnson Manufacturing Company operates six identical machines that are serviced by a single technician when they break down. Breakdowns occur according to the Poisson distribution and average 0.03 breakdowns per machine operating hour. Average repair time for a machine is five hours and follows the exponential distribution.
(a) What percentage of the technician's time is spent repairing machines?
(b) On average, how long is a machine out of service because of a breakdown?
(c) On average, how many machines are out of service?
(d) Johnson wants to investigate the economic feasibility of adding a second technician. Each technician costs the company $18 per hour. Each hour of machine downtime costs $120. Should a second technician be added?
Create a 95% confidence interval for the value of the population mean, given that their are 64 observations and a sample mean of 49, with a sample standard deviation of 3,test the hypothesis with an alpha equal to .05
Identify the following dilemmas as either constructive or destructive.- If corporations are to remain competitive, then they must not spend money to neutralize their toxic waste;
A 50-mm-by-300-mm scaffold timber plank, placed flatwise, must carry a uniformly distributed line load of 1.50 kN/m without exceeding an allowable bending.
Assume x is normally distributed with mean u=15 and standard deviation 0=3. Use the approximate areas beneath the normal curve, as discussed in this section, to answer the following questions.
What symbol represents the Random Variable for this test?
State if the equation is separable or homogeneous:
Suppose the person is a wireless-only user. What is the probability that she is in excellent health?- Suppose the person is a wireless-only user. What is the probability that she is in poor health?
a study of fast-food nutrition compared the caloric content of french fries. thirty-eight randomly selected servings of
A sample of 400 First time home buyers found that the mean of annual household income was $60,000 and the sample standard deviation in income was $14,500. Construct 95% confidence intervals for the population mean annual household income for the f..
Display a histogram of the 50 means of the chosen samples.- Describe the histogram in part (a), including shape, center, and spread.
Parts, materials and product inventories need to be kept up to date irrespective of their dynamic nature. As a fresh graduate from college document clearly the modern inventory management techniques.
mary took a test and her score was the 85th percentile.which of the following is a true statement about marys score?a.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd