Which of the following is an accurate interpretation of sign

Which of the following is an accurate interpretation of significant experimental results?

       We reject the null hypothesis; we have found support for our research hypothesis
       We reject the null hypothesis; we have proven our research hypothesis to be true
       We fail to reject the null hypothesis; we have proven that our null hypothesis is true
       We fail to reject the null hypothesis; we have proven our research hypothesis to be true

Solution

Option (1) is correct. Significant experiment means rejection of null. Note that we cannot prove anything in real life, we can only find sufficient evidence.