Two hundred (200) devices are put on life test without replacement and the times to failure...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Two hundred (200) devices are put on life test without replacement and the times to failure of the first ten (10) which fail are: 0.7, 1.4, 1.9, 3.0, 5.5, 8.0, 17.5, 26.0, 44.0 and 80.0 hours: a) Assuming a Weibull failure-time distribution, estimate the parameters a and ß as well as the failure rate at 100 hours. b) How does the value of a compare with the value we would obtain if an exponential model is assumed? Two hundred (200) devices are put on life test without replacement and the times to failure of the first ten (10) which fail are: 0.7, 1.4, 1.9, 3.0, 5.5, 8.0, 17.5, 26.0, 44.0 and 80.0 hours: a) Assuming a Weibull failure-time distribution, estimate the parameters a and ß as well as the failure rate at 100 hours. b) How does the value of a compare with the value we would obtain if an exponential model is assumed?
Expert Answer:
Answer rating: 100% (QA)
a We can estimate the parameters and as well as the failure rate at 100 hours of ... View the full answer
Related Book For
John E Freunds Mathematical Statistics With Applications
ISBN: 9780134995373
8th Edition
Authors: Irwin Miller, Marylees Miller
Posted Date:
Students also viewed these accounting questions
-
The following are the times to failure of 38 light bulbs, given in hours of operation. (a) Dropping the rule that class intervals must be equal, construct a frequency distribution from these data....
-
The times to failure of certain electronic components in accelerate environment tests are 15, 28, 3, 12, 42, 19, 20, 2, 25, 30, 62, 12, 18, 16, 44, 65, 33, 51, 4, and 28 minutes. Looking upon these...
-
How does the value of equality compare to the values of security and liberty?
-
explain the term " system development" and describe the steps involved in system development
-
Scanlin, Inc., is considering a project that will result in initial after tax cash savings of $1.8 million at the end of the first year, and these savings will grow at a rate of 2 percent per year...
-
Your firm is considering purchasing a machine with the following annual, end-of-year, book investment accounts. The machine generates, on average, $5,800 per year in additional net income. a. What is...
-
A gamma scan showing the active volume of a patient's lungs can be created by having a patient breathe the radioactive isotope \({ }^{133} \mathrm{Xe}\), which undergoes beta-minus decay with a...
-
Romano Corporation has three operating divisions and requires a 12% return on all investments. Selected information is presented here: Required: a. Calculate the missing amounts for each division. b....
-
Provide a well-balanced assessment of how warehousing, distribution centers, and inventory can maintain a healthy and efficient supply chain according to the readings and information from at least...
-
The state diagram in Figure P2.51 describes a system with states A, B, and C. The system is initialized in State A. The state transition notation x/yz indicates that an input x causes a transition in...
-
The frame shown in Figure Q2 has rigid floors and can be considered as a "shear frame". The masses are lumped onto the floor slabs as shown in the Figure. Determine (i) the structure stiffness matrix...
-
In the compliance context, what is a "gatekeeper"? Your reading this week describes "two concepts" of gatekeeperszealous advocate or public servant. What is meant by these competing concepts? Which...
-
Describe the strategies and mechanisms utilized by contemporary operating systems for handling concurrency and ensuring mutual exclusion in multi-threaded or multi-process environments, considering...
-
Employment Tribunals: The forum for enforcement of discrimination rights? 1. Do you agree the introduction of fees for employment tribunal claims is a barrier to justice for those employees seeking...
-
The July manufacturing overhead budget of Kyoto Corporation, shown below, was constructed assuming an activity level of 48,000 direct labor hours: Variable costs: Indirect labor $48,000 Indirect...
-
Book: Managing Organizational Change: A Multiple Perspectives Approach. by Ian Palmer Book Chapter : chp 12 1a. Do you feel that you have the resilience required to operate effectively as a change...
-
You are looking at purchasing a new computer for your four-year undergraduate program. Brand 1 costs $3,800 now, and you expect it will last throughout your program without any upgrades. Brand 2...
-
Test whether the 5-year survival rate for breast cancer is significantly different between African American and Caucasian women who are younger than 50 years of age and have localized disease....
-
Show that when and remains constant, the moment-generating function of a standardized gamma random variable approaches the moment-generating function of the standard normal distribution.
-
Find the moment- generating function of the discrete random variable of the discrete random variable f(x) = 2(1/3)x for x = 1,2,3, And use it to determine the values of '1 and '2.
-
With reference to the definition of Exercise 9.16, find the decisions that will minimize the maximum opportunity loss of (a) Ms. Cooper of Exercise 9.12; (b) The truck driver of Exercise 9.13.
-
For coordinates \(\left(x^{1}, x^{2} ight)\) and metric \(g=\operatorname{diag}\left(g_{11}, g_{22} ight)\), the Gaussian curvature is For a sphere with coordinates defined in the following figure,...
-
Consider the holonomic basis defined in Box 26.1 . Using that the tangent vector for a curve can be written \(t=t^{\mu} e_{\mu}=\left(d x^{\mu} / d \lambda ight) e_{\mu}\), show that Thus, \(g_{\mu...
-
The Lie bracket of vector fields \(A\) and \(B\) is defined as their commutator, \([A, B]=\) \(A B-B A\). The Lie bracket of two basis vectors vanishes for a coordinate basis but not for a...
Study smarter with the SolutionInn App