The shelf life of a battery produced by one major company is known to be normally distributed, with a mean life of 3.8 years and a standard deviation of 0.4 years. Using the expanded empirical rule, what is the probability in decimal form that a randomly chosen battery will (a) last between 2.6 and 5 years? Answer: 99.6 (b) last fewer than 3.4 years? Answer: 15.8 (c) last more than 4.6 years?

The shelf life of a battery produced by one major company is known to be normally distributed, with a mean life of 3.8 years and a standard deviation of 0.4 years. Using the expanded empirical rule, what is the probability in decimal form that a randomly chosen battery will (a) last between 2.6 and 5 years? Answer: 99.6 (b) last fewer than 3.4 years? Answer: 15.8 (c) last more than 4.6 years?

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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