To find the P-value of 1.278, consult a standard normal distribution table or use statistical software/tools for the corresponding cumulative probability.
The P-value associated with a test statistic, such as 1.278, is a measure of the probability of obtaining a test statistic as extreme as, or more extreme than, the observed value, assuming the null hypothesis is true. In the context of hypothesis testing, a smaller P-value indicates stronger evidence against the null hypothesis.
To find the P-value for a test statistic like 1.278, one typically refers to a standard normal distribution table or uses statistical software to determine the cumulative probability associated with that specific value. The P-value gives insights into the significance of the observed result and helps in making informed decisions about accepting or rejecting the null hypothesis in hypothesis testing scenarios.