t methods - a tradi conclude, at a = .
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.3: Lines
Problem 15E
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Step 1
The claim is that the test scores in the web based self-placed are lower.
Let denote the population mean of traditional method.
Let denote the population mean of web based self placed method.
The null hypothesis is,
The alternative hypothesis is,
The level of significance is ,
Critical Value:
From the alternative hypothesis, it is clear that the test is a right-tailed test.
From standard normal table at 0.05 level of significance the right tailed critical value is,
Decision rule:
Reject the null hypothesis if
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