# Why Might A Hypothesis Be Modified Or Rejected?

Upon analysis of the results, a hypothesis can be rejected or modified, but it can never be proven to be correct 100 percent of the time. For example, relativity has been tested many times, so it is generally accepted as true, but there could be an instance, which has not been encountered, where it is not true.

## When to accept or reject a hypothesis result?

For reliable hypothesis test result, it is essential that the distribution of the sample be tested. Test statistic value is compared with critical value when the null hypothesis is true (critical value). If the test statistic is more extreme as compared to the critical value, then the null hypothesis would be rejected.

## How are null hypothesis and alternative hypothesis tested?

The null hypothesis and alternative hypothesis are statements regarding the differences or effects that occur in the population. You will use your sample to test which statement (i.e., the null hypothesis or alternative hypothesis) is most likely (although technically, you test the evidence against the null hypothesis).

## What are the different types of research hypothesis?

Types of Research Hypotheses. 1 Alternative Hypothesis. The alternative hypothesis states that there is a relationship between the two variables being studied (one variable has an ... 2 Null Hypothesis. 3 Nondirectional Hypothesis. 4 Directional Hypothesis.

## Can a statistically significant result prove a hypothesis?

A statistically significant result cannot prove that a research hypothesis is correct (as this implies 100% certainty). Because a p -value is based on probabilities, there is always a chance of making an incorrect conclusion regarding accepting or rejecting the null hypothesis ( H0 ).

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