Formula for the variance of the prediction error

Assignment Help Accounting Basics

Reference no: EM131056673

Battery failures. In five years, 500.000 batteries were put into service at a uniform rate. In that period, 5000 of them failed and were promptly replaced

(a) How many battery-years of exposure were accumulated by the end of the five-year period?

(b) Assuming Poisson data, estimate the failure rate of such batteries.

(d) Is the Poisson distribution appropriate? State your reasons

(e) 100.000 more units will be manufactured and go into service over the coming year. Give a prediction of the number of failures in the entire population in service in the coming year

(f) Give the formula for the variance of the prediction error for (e) in terms of the failure rate A, previous exposure 1. and future exposure s.

(g) Calculate approximate 95% prediction limits for (e)

Reference no: EM131056673

Questions Cloud

How films might be different were they made in another time : Plus, What influences from their time periods are present in the films? Consider how the films might be different were they made in another time and place. Why and how would they be different?

Estimate the outage rates : Power line outages. Seven power lines of different lengths had outages as shown below. The exposure of a line equals its length times the years observed. Assume that the number of outages has a Poisson distribution

Appreciated or devalued against the mark : Assume that a bank has assets located in London worth £150 million on which it earns an average of 8 percent per year. The bank has £100 million in liabilities on which it pays an average of 6 percent per year. The current spot exchange rate is £1..

Write a program that creates a child process : demonstrate that the two processes alternately execute for 1 second of CPU time. (Note carefully the advice given in Section 35.3.2 about preventing a runaway realtime process from hogging the CPU.)

Formula for the variance of the prediction error : Battery failures. In five years, 500.000 batteries were put into service at a uniform rate. In that period, 5000 of them failed and were promptly replaced

What is the expected return of asset : a. What is the expected return of each asset? b. What is the variance of each asset? c. What is the standard deviation of each asset?

Find out the firm d equity beta : The firm D wants to use the information available from its industry to determine its equity beta. Find out the firm D's equity beta. (Hint: use unlever and re-lever procedures)

Describe the possible migration of ancient peoples : Describing the possible migration of ancient peoples; The influence that trade, agriculture, and tools had on movements; and How colonial actions and colonization impacted those among whom the colonists settled.

Performs the equivalent of pthread_once() : To keep the implementation simple, you can ignore possibilities such as init() failing or being canceled when first called from a thread (i.e., it is not necessary to devise a scheme whereby, if such an event occurs, the next thread that calls one..

User Account

All Pages