The HO and H1 for testing that the students have a lower mark before the course are : What is the decision rule at the 5% level of significance for testing the hypothesis that the course improved exam results? What is the value of the sample mean difference (D bar) when the results of the exam before the course is (pop. 1) and the results of the exam after the course is (pop. 2). The value of the standard deviation of the difference scores is: The calculated test statistic is: The conclusion for this hypothesis test would be:
The HO and H1 for testing that the students have a lower mark before the course are : What is the decision rule at the 5% level of significance for testing the hypothesis that the course improved exam results? What is the value of the sample mean difference (D bar) when the results of the exam before the course is (pop. 1) and the results of the exam after the course is (pop. 2). The value of the standard deviation of the difference scores is: The calculated test statistic is: The conclusion for this hypothesis test would be:
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 13PPS
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Transcribed Image Text:Hypothesis testing
Four students took an English test before and after a preparation course to test the effects of the preparation course.
The exam marks before and after the course are given below.
Student Before Course
After Course
1
810
630
620
870
710
900
4
620
610
The H0 and H1 for testing that the students have a lower mark before the course are :
What is the decision rule at the 5% level of significance for testing the hypothesis that the course improved exam
results?
What is the value of the sample mean difference (D bar) when the results of the exam before the course is (pop. 1) and
the results of the exam after the course is (pop. 2).
The value of the standard deviation of the difference scores is:
The calculated test statistic is:
The conclusion for this hypothesis test would be:
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