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The sample mean and standard devi ation for the fill weights of l00 boxes are X = 12.05 and 5z 0,1. Find an for the mean till weight of the boxes. 85% con fidence interval

The sample mean and standard devi ation for the fill weights of l00 boxes are X = 12.05 and 5z 0,1. Find an for the mean till weight of the boxes. 85% con fidence interval

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The sample mean and standard deviation for the fill weights of l00 buxes are X = 12.05 and 5= 0.1. Find an 85% con fidence interval for the mean till weight of the boxes. 2. 3. Specifications for a water pipe call for a mean bieaking strength u of more than 2000 (b per linear foot. Engineers will perform a hypothesis test to decide whether or not to use a certain kind of pipe. They will select a random sample of IH sections of pipe, measure their biegking strengths, and perform hypothesis test. The pipe will not be used Unless the engin gers can conlude that u>2000, Assume they test Hi: u> 2000 . Will the engineers decide to use Hoius2000 versus the pipe if Ho is réjected? What if Ho is not réjected?
Transcribed Image Text:The sample mean and standard deviation for the fill weights of l00 buxes are X = 12.05 and 5= 0.1. Find an 85% con fidence interval for the mean till weight of the boxes. 2. 3. Specifications for a water pipe call for a mean bieaking strength u of more than 2000 (b per linear foot. Engineers will perform a hypothesis test to decide whether or not to use a certain kind of pipe. They will select a random sample of IH sections of pipe, measure their biegking strengths, and perform hypothesis test. The pipe will not be used Unless the engin gers can conlude that u>2000, Assume they test Hi: u> 2000 . Will the engineers decide to use Hoius2000 versus the pipe if Ho is réjected? What if Ho is not réjected?
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