How many more Tweets are students at Hempstead High School sending in 2017 than in 2012? The table below displays summary statistics from a random sample of students selected in 2012 and a random sample selected in 2017. Mean Tweets Standard Population per Day Deviation 2012 40 4.3 5.6 2017 55 7.9 2.1 1. Construct a 90% confidence interval for the true difference in the mean number of Tweets for students at this high school from 2012 to 2017.
How many more Tweets are students at Hempstead High School sending in 2017 than in 2012? The table below displays summary statistics from a random sample of students selected in 2012 and a random sample selected in 2017. Mean Tweets Standard Population per Day Deviation 2012 40 4.3 5.6 2017 55 7.9 2.1 1. Construct a 90% confidence interval for the true difference in the mean number of Tweets for students at this high school from 2012 to 2017.
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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Transcribed Image Text:How many more Tweets are students at Hempstead High School sending in 2017
than in 2012? The table below displays summary statistics from a random sample of
students selected in 2012 and a random sample selected in 2017.
Mean Tweets
Standard
Population
per Day
Deviation
2012
40
4.3
5.6
2017
55
7.9
2.1
1. Construct a 90% confidence interval for the true difference in the mean number of
Tweets for students at this high school from 2012 to 2017.
2. Interpret the interval.
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