A certain type of thread is manufactured with a mean tensile strength of 78.3 kilograms and a standard deviation of 5.6 kilograms. How is the variance of the sample mean changed when the sample size is:please show complete solution A certain type of thread is manufactured with a mean tensile strength of 78.3 kilograms and a standarddeviation of 5.6 kilograms. How is the variance of the sample mean changed when the sample size is1.а.increased from 64 to 196?b.decreased from 784 to 49?|

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A certain type of thread is manufactured with a mean tensile strength of 78.3 kilograms and a standard deviation of 5.6 kilograms. How is the variance of the sample mean changed when the sample size is a. increased from 64 to 196? b. decreased from 784 to 49?| 1.

A certain type of thread is manufactured with a mean tensile strength of 78.3 kilograms and a standard deviation of 5.6 kilograms. How is the variance of the sample mean changed when the sample size is a. increased from 64 to 196? b. decreased from 784 to 49?| 1.

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter14: Computational Engineering Tools Electronic Spreadsheets

Section: Chapter Questions

Problem 20P

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A certain type of thread is manufactured with a mean tensile strength of 78.3 kilograms and a standard deviation of 5.6 kilograms. How is the variance of the sample mean changed when the sample size is:

please show complete solution

A certain type of thread is manufactured with a mean tensile strength of 78.3 kilograms and a standard
deviation of 5.6 kilograms. How is the variance of the sample mean changed when the sample size is
1.
а.
increased from 64 to 196?
b.
decreased from 784 to 49?|

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