Question

If a null hypothesis is rejected at a significance level of 1%, then we should say that it was rejected at 1%. Reporting that the null was also rejected at the 5% level of significance is unnecessary and unwise.

True or false?

Answer 1

1. If you reject the null hypothesis at 1 per cent significance level that means the experimental results are 99 per cent certain/confident of the rejection of null hypothesis or the rejection is supported with 99 per cent certainty. With this logic, we need not test for 5 per cent confidence level because it will also be rejected with 95 per cent certainty as it has already been rejected with higher (99 per cent) certainty. Thus, the statement is TRUE.