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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section: Chapter Questions

Problem 8SGR

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Question

6)

Determine the specified confidence interval.
An organization advocating for health care reform has estimated the average cost for
health care of a senior citizen receiving Medicare to be about $13,000 per year. At
the end of the article it was stated that, with 90% confidence, the margin of error for
this estimate is $1,000.
What is the resulting 90% confidence interval for the average cost for health care of
a senior citizen receiving Medicare?
O ($12,000 , $13,000)
O ($12,000 , $14,000)
O ($13,000 , $14,000)
O ($12,500 , $13,500)

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