We don't reject the null hypothesis ⇒ The null hypothesis is correct, not true!
In this case, it was only not rejected due to insufficient evidence. You can also look for new evidence and aim to reject the null hypothesis.
In other words, rejection should not be easy. Once you have rejected a hypothesis, you will not consider it again. So reject it carefully. This means that the significance level must be as low as 5% or 1%.
Also, a hypothesis test conducted at 1% will have a higher accuracy rate than a hypothesis test conducted at 5%.
Do you understand? I will leave the translation to you. Good day to you.
