College entrance exams have a large effect on which university a student will attend once they graduate from high school; thus, there are many college preparatory exam companies claiming they can significantly increase a student’s ACT score. Nine college students who have already taken the ACT were randomly selected to participate in a college preparatory exam course. Their scores on the ACT before and after the preparatory course are given in the table below. Before: 26, 24, 20, 25, 21, 26, 18, 23, 27 After: 24, 24, 21, 25, 21, 28, 19, 25, 29 Hypothesis test needed After:
College entrance exams have a large effect on which university a student will attend once they graduate from high school; thus, there are many college preparatory exam companies claiming they can significantly increase a student’s ACT score. Nine college students who have already taken the ACT were randomly selected to participate in a college preparatory exam course. Their scores on the ACT before and after the preparatory course are given in the table below. Before: 26, 24, 20, 25, 21, 26, 18, 23, 27 After: 24, 24, 21, 25, 21, 28, 19, 25, 29 Hypothesis test needed After:
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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College entrance exams have a large effect on which university a student will attend once they graduate from high school; thus, there are many college preparatory exam companies claiming they can significantly increase a student’s ACT score. Nine college students who have already taken the ACT were randomly selected to participate in a college preparatory exam course. Their scores on the ACT before and after the preparatory course are given in the table below.
Before: 26, 24, 20, 25, 21, 26, 18, 23, 27
After: 24, 24, 21, 25, 21, 28, 19, 25, 29
Hypothesis test needed
After:
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