Question

1- When conducting hypothesis testing, the P value (also known as a Prob value) for the test allows one to make a decision whether to reject the null hypothesis or not. Explain what the P value represents and how it is used to decide whether to reject the null hypothesis or not.

Answer 1

1.The P value, or calculated probability, is the probability of finding the observed, or more extreme, results when the null hypothesis (H₀) of a study question is true – the definition of ‘extreme’ depends on how the hypothesis is being tested. P is also described in terms of rejecting H₀ when it is actually true, however, it is not a direct probability of this state.

If P value is less than level of significance we reject the null hypothesis or else we fail to reject the null hypothesis