average internet speed in your house. What is the margin of error for this estimate?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Internet speeds are a heavily advertised selling point
of Internet Service Providers. You notice that
although you are paying for a certain speed, the true
speed seems to vary depending on where you are in
your house. In order to estimate the true average
speed you are getting in your house, you go to 12
random spots around your house and record the
speed (in MBs per second) shown from a test at
www.speedtest.net'. You see that the average is 5.43
MB/s with a standard deviation of 1.574 MB/s. You
decide to create a 90% confidence interval for the
average internet speed in your house. What is the
margin of error for this estimate?
Transcribed Image Text:Internet speeds are a heavily advertised selling point of Internet Service Providers. You notice that although you are paying for a certain speed, the true speed seems to vary depending on where you are in your house. In order to estimate the true average speed you are getting in your house, you go to 12 random spots around your house and record the speed (in MBs per second) shown from a test at www.speedtest.net'. You see that the average is 5.43 MB/s with a standard deviation of 1.574 MB/s. You decide to create a 90% confidence interval for the average internet speed in your house. What is the margin of error for this estimate?
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