Two universities give samples of students the same exam. School A records the follwoing sample statistics: =73, s,=5.5, n =80. School B records the follwoing sample statistics: az=69, s,=4.4, n2 =90. We wish to build a 95 % cofidence interval to estimate the difference in means between these schools.
Two universities give samples of students the same exam. School A records the follwoing sample statistics: =73, s,=5.5, n =80. School B records the follwoing sample statistics: az=69, s,=4.4, n2 =90. We wish to build a 95 % cofidence interval to estimate the difference in means between these schools.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Problem 1P
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Transcribed Image Text:Two universities give samples of students the same exam.
School A records the follwoing sample statistics: ā1=73, 8,=5.5, ni
=80.
School B records the follwoing sample statistics: z=69, ,=4.4, n2
=90.
We wish to build a 95 % cofidence interval to estimate the
difference in means between these schools.
Define your variable:
O Let p be the proprotion School A students that were higher
than School B.
Let u the mean test score that School A was higher than
School B.
Let u be the mean test score.
O Let u be the mean test score at School A.
Create and interpret a 95% Confidence Interval. Round your
answers to one decimal place.
Select an answer
and
Select an answer
What is the margin of error? Round your answer to one decimal
place.
Do these results suggest that School A might have higher means
on this test? ?
Do these results PROVE that School A might have higher means
on this test?
The campus president at School A made the following
statement. "Our students score an average of 5 points higher
that students at School B on this test.".
What do you think of this claim?
Select an answer
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