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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)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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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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