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The width of a confidence interval calculated to estimate the population mean decreases (gets narrower) when: O a. The sample size increases (i.e. n increases from 50 to 100). O b. The confidence level percentage increases (i.e. confidence level increases from 90% to 95%). O c. The sample mean decreases (i.e X decreases from 30 to 20). O d. The sample standard deviation increases (i.e. s increases from 5 to 10)

The width of a confidence interval calculated to estimate the population mean decreases (gets narrower) when: O a. The sample size increases (i.e. n increases from 50 to 100). O b. The confidence level percentage increases (i.e. confidence level increases from 90% to 95%). O c. The sample mean decreases (i.e X decreases from 30 to 20). O d. The sample standard deviation increases (i.e. s increases from 5 to 10)

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 width of a confidence interval calculated to estimate the population mean decreases (gets narrower) when: O a. The sample size increases (i.e. n increases from 50 to 100). O b. The confidence level percentage increases (i.e. confidence level increases from 90% to 95%). O c. The sample mean decreases (i.e X decreases from 30 to 20). O d. The sample standard deviation increases (i.e. s increases from 5 to 10)
Transcribed Image Text:The width of a confidence interval calculated to estimate the population mean decreases (gets narrower) when: O a. The sample size increases (i.e. n increases from 50 to 100). O b. The confidence level percentage increases (i.e. confidence level increases from 90% to 95%). O c. The sample mean decreases (i.e X decreases from 30 to 20). O d. The sample standard deviation increases (i.e. s increases from 5 to 10)
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