t-test for two means unequal variances examples
- STATISTICS
Two Sample $t$-Test (Independent Sample with Unequal Variances) In this tutorial we will discuss some numerical examples on two sample t test for difference between two population means when the population variances are unknown and unequal.
Example 1 A statistician claims that the average score on logical reasoning test taken by students who major in Physics is less than that of students who major in English. The result of the exams, given to 22 Physics students and 33 English students, is shown here.