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BOUNDARY CROSSING PROBABILITIES FOR THE CUMULATIVE SAMPLE MEAN

Published online by Cambridge University Press:  08 March 2017

Dashi I. Singham
Affiliation:
Operations Research Department, Naval Postgraduate School, Monterey, CA 93943, USA E-mail: [email protected]
Michael P. Atkinson
Affiliation:
Operations Research Department, Naval Postgraduate School, Monterey, CA 93943, USA E-mail: [email protected]

Abstract

We develop a new measure of reliability for the mean behavior of a process by calculating the probability the cumulative sample mean will stay within a given distance from the true mean over a period of time. This probability is derived using boundary-crossing properties of Brownian bridges. We derive finite sample results for independent and identically distributed normal data, limiting results for data meeting a functional central limit theorem, and draw parallels to standard normal confidence intervals. We deliver numerical results for i.i.d., dependent, and queueing processes.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2017 

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