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Six batteries taken at random from a large lot were subjected to life sts with the following results: 19, 22, 18, 16, 25, and 20 hours. ind the probability that the sample mean of x=20 hours, as observed here, or one ss than 20 hours could arise if the true mean of the lot of batteries is 21.5 hours, ssuming a known variance of o =10 hours, for the individual batteries in the lot. %3D

Six batteries taken at random from a large lot were subjected to life sts with the following results: 19, 22, 18, 16, 25, and 20 hours. ind the probability that the sample mean of x=20 hours, as observed here, or one ss than 20 hours could arise if the true mean of the lot of batteries is 21.5 hours, ssuming a known variance of o =10 hours, for the individual batteries in the lot. %3D

A First Course in Probability (10th Edition)
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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1. Six batteries taken at random from a large lot were subjected to life tests with the following results: 19, 22, 18, 16, 25, and 20 hours. Find the probability that the sample mean of x= 20 hours, as observed here, or one less than 20 hours could arise if the true mean of the lot of batteries is 21.5 hours, assuming a known variance of o = 10 hours, for the individual batteries in the lot. %3D
Transcribed Image Text:1. Six batteries taken at random from a large lot were subjected to life tests with the following results: 19, 22, 18, 16, 25, and 20 hours. Find the probability that the sample mean of x= 20 hours, as observed here, or one less than 20 hours could arise if the true mean of the lot of batteries is 21.5 hours, assuming a known variance of o = 10 hours, for the individual batteries in the lot. %3D
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