Question: Pre-read: A school conducted special classes to help students with poor verbal English. Each student was required to give a test twice, once before starting

Pre-read:

A school conducted special classes to help students with poor verbal English. Each student was required to give a test twice, once before starting the classes (Test 1) and once again after completing 4 weeks in the class (Test 2).

Let Y1 and Y2 be the scores in Test 1 and Test 2 respectively.

Let Y = Y2 - Y1. Hence, if the population mean ? for Y is equal to zero, then the special classes have no effect on the average.

It is planned to test the null hypothesis of the class having no effect, against the alternative hypothesis that there is a positive effect due to the classes.

Pre-read:A school conducted special classes to help students with poor verbal English.

Student Test 1 Test 2 Abhay 5 8 Bhumika 3 10 Charan 2 5 Dinesh 4 7 Variable Number of Mean Standard Standard error Students Deviation Y 4 4.000 2.000 1.000

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