It is known that the length of life of the batteries produced by a certainmanufacturing company is normally distributed with a standard deviation of 0.75years. How many sample batteries must be taken to estimate the true mean lengthto within 0.02 years at 99% confidence?

here given, MOE = 0.02 z-critical for 99 % confidence level = 2.576 (use excel command…

Answered: years. How many sample batteries must…

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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years. How many sample batteries must be taken to estimate the true mean length to within 0.02 years at 99% confidence?