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t methods - a tradi conclude, at a = .

t methods - a tradi conclude, at a = .

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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t methods - a tradi conclude, at a = .
Transcribed Image Text:t methods - a tradi conclude, at a = .
Expert Solution
Step 1

 

The claim is that the  test scores in the web based self-placed are lower.

Let Statistics homework question answer, step 1, image 1 denote the population mean of traditional method.

Let Statistics homework question answer, step 1, image 2denote the population mean of web based self placed method.

The null hypothesis is,

Statistics homework question answer, step 1, image 3

The alternative hypothesis is,

Statistics homework question answer, step 1, image 4

The level of significance is ,

Statistics homework question answer, step 1, image 5

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, 

Statistics homework question answer, step 1, image 6

Decision rule:

Reject the null hypothesis if

Statistics homework question answer, step 1, image 7

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