Q: Show "Does it affect?" with hypothesis test I am trying to learn ttest and ANOVA for my project. I need to know that my subjects answers "effected" by the feedback they get from the first question.
What should I use to show "sth did effect or not sth"? 
ANOVA or ttest?  
Thanks in advance.
My data is:
A person answers a question and receives a feedback as "good/bad" than he/she answers another question. Does the second answer effected by the feedback or not? That is what i want to learn.   

A: An ANOVA comparing 2 groups is exactly equal to a 2-sample pooled t-test with 2-tailed alternative.  So it may not matter which you use.
Some advantages to using the t-test: you can do a 1-tailed test, you can do an approximation if you believe that the variances of the 2 groups differ.  A confidence interval is more straight forward (automatic in some software).
Some advantages to using ANOVA: can compare more than 2 groups.
