Provide two different examples of how research uses hypothesis testing, and B.describe the criteria for rejecting the null hypothesis

1. A. A hypothesis test is a statistical method that’s widely used to test specific hypotheses. In a study examining the effect of a medication on blood tension, the researcher might have the hypothesis that it will lower blood pressure. Hypothesis testing can be used by the researcher to decide if this hypothesis is supported with enough evidence. An example of this would be to investigate the effect of a change in teaching methods on students’ performance.

B. The researcher’s level of significance is used to determine the criteria for rejecting a null hypothesis. The null hypotheses is generally rejected when the calculated P-value falls below the selected level of significance, which is usually 0.05. It means there are strong arguments against the null hypotheses and the alternative hypothesis will likely be correct.

C. Hypothese testing is essential in the healthcare field, as it allows for researchers to evaluate whether or not a given treatment is effective. The information that is gathered can be used in clinical practice to improve outcomes for patients. It is also useful for patient interaction, allowing healthcare providers to base their decisions on evidence.

2. In healthcare research, hypothesis testing and confidence ranges are frequently used in conjunction. The hypothesis testing method is used to assess whether or not there are any evidences to support the specific hypotheses, and the confidence intervals to calculate the likely range of values for the population parameter.

A study that investigates the effect of a medication on blood-pressure may use hypotheses testing to test its effectiveness in reducing the blood pressure. A study can also estimate blood pressure ranges by using confidence intervals.

B. An example of the use of confidence intervals and hypothesis testing in the workplace could be an investigation into the effect of a surgical technique. A study could use hypothesis tests to see if the new surgical technique leads to better outcomes for patients than current standards of care. Confidence intervals may be used to determine the possible range of improvements in the population. The information provided can help improve clinical outcomes and inform practice.