# Hypothesis Testing Essay

Hypothesis testing is basically a process that uses statistical inference to test claims about population parameters. In hypothesis testing we begin by making a tentative assumption about a population parameter. This assumption is called the null hypothesis and is denoted by Ho. We then define another hypothesis, called the alternative hypothesis, which is the opposite of what is stated is the null hypothesis. The alternative hypothesis is denoted by Ha. The hypothesis testing procedure involves using data from a sample to test the competing claims indicated by the null and alternate hypotheses.

Testing the hypothesis is similar to a criminal trail. Ho: The defendant is innocent Ha: The

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If the sample results indicate that Ho cannot be rejected, we will not conclude that the carburetor improves mileage. Perhaps more research and testing needs to be conducted. If the sample data suggests that the null hypothesis can be rejected, the inference is made that [pic]> 25 since the researcher now has the necessary statistical support.

In research studies such as these, the null and alternate hypotheses should be formulated so that the rejection of the null, and hence the inference that the alternative is true, will provide the researcher with the conclusion and action being sought. The research hypothesis then should be expressed as the alternative hypothesis.

Testing Validity of Assumption

Testing Validity of