How many spare tubes must the building custodian maintain

Assignment Help Electrical Engineering

Reference no: EM13250020

The time to failure of fluorescent lights in a large office building is exponentially distributed with a failure rate of 0.03125 hours. How many spare tubes must the building custodian maintain to have at least a 0.95 probability of replacing all failures on a given day? Assume continuous 24-hour use of the lights.

Reference no: EM13250020

Questions Cloud

What roles do data and business processes play in achieving : What roles do data and business processes play in achieving the benefits and what can companies do to obtain management committment to BI?

Determine the gravitational potential energy of the earth : Assume the mass density of Earth from the center to r= R_cm (radius of the core mantle boundary) is d_cm and from R_cm until the surface r=R_e the density is d_e. Using these densities, determine the gravitational potential energy of the Earth

What experiences and qualifications are important : What experiences and qualifications are important in preparing managers for "fact-based" decision making and how are the skills needed for DSS obtained?

Compute the density and copper ion radius : Calculate the density. Copper (II) ion radius of 0.96A and the sulfide ion has a radius of 1.84A. Calculate the % of the cube occupied by the copper(II) sulfide.

How many spare tubes must the building custodian maintain : The time to failure of fluorescent lights in a large office building is exponentially distributed with a failure rate of 0.03125 hours. How many spare tubes must the building custodian maintain to have at least a 0.95 probability of replacing all..

Is second-mover advantage always a good business strategy : What can a front-runner business do to foil the assaults of second movers? Is the second-mover advantage always a good business strategy?

Define intracellular signaling molecules must be inactivated : To be effective, intracellular signaling molecules must be inactivated/removed when their effects are no longer needed. Provide the methods by which this occurs for the following classes of intracellular messengers

Prepare an initial response that will attract the interest : In today's depressed economy, your small consulting company is "scratching" for survival. You have been charged to prepare an initial response that will attract the interest of the company that posted the RFP.

What is system reliability for hours of continuous operation : Consider two identical and redundant CFR (Constant Failure Rate) components having a guaranteed life of 2 months and a failure rate of 0.15 failures per year. What is the system reliability for 10,000 hours of continuous operation

User Account

All Pages