Let X equal the length of life of a 60-watt light bulb marketed by a certain manufacturer.We do not know the distribution of X except that Var(X) = 1158. Let u be the mean of X.Suppose a random sample of n = 25 bulbs is tested until they burn out, yielding a samplemean of = 1368 hours.(i) Compute an approximate 95% confidence interval for u.(ii) Compute an approximate 95% one-sided confidence interval for that provides alower bound for u, i.e. compute & such thatɛP(X - ≤ μµ)≈ 0.95.

From the given information, VarX=1158n=25x¯=1368

Answered: Let X equal the length of life of a…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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