Question 6A manufacturer produces, packages, and sells packs of their product targeted to weigh 50 grams. A qualitycontrol manager working for the company was concerned that the variation in the actual weights of thetargeted 50-gram packs was larger than acceptable. That is, he was concerned that some packs weighedsignificantly less than 50-grams and some weighed significantly more than 50 grams. In an attempt toestimate the standard deviation of the weights of all of the 50-gram packs the manufacturer makes, hetook a random sample of 21 packs off of the factory line. The random sample yielded the sample mean49.86 grams and the standard deviation of 0.655 grams. Use the random sample to derive a 99% confidenceinterval for the variance (standard deviation) of the actual weights of the packs.Note: if the normality plot is not provided you may assume that the actual weights of the packs arenormally distributed.i. Procedure:Select an answerSelect an answerOne mean Z procedureOne variance x² procedureOne mean T procedureOne proportion Z procedureii. Assumptions: (select everything that applies)Simple random sampleThe number of positive and negative responses are both greater than 10Population standard deviation is unknownSample size is greater than 30Normal populationO Population standard deviation is knowniii. Unknown parameter: Select an answerSelect an answerp, population proportionμ, population meano², population variance

Given that Sample size n =21 Sample mean=49.86 Standard deviation =0.655

Answered: anufacturer produces, packages, and…

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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