The research question for this experiment was which vaccine is more effective for preventing getting the flu? The null hypothesis was shot spray is equal effective than nasal spray the alternative hypothesis was shot id more effective than nasal spray. After looking through the experiment, the results of this test seemed was statistically significant. The results were significant because the level of significance was set at .05. The researcher’s option to reject or fail to reject the null hypotheses resulted in rejecting the null hypothesis. Basis of p value researchers rejected the hypothesis at 5% of level of significance researchers can say there is significance difference between shot and nasal spray. We can say that the shot is more effective than the nasal spray. The results provide sufficient evidence to support the alternative hypothesis. Reserachers assume that their alternative hypothesis, shot is more effective than the nasal spray. Based on the sample proportion, shot is resulted in being more effective than the nasal spray. This also leaves a result it them being vice versa too.
The results do not provide enough evidence to support alternative hypothesis because in other alternative calculation remains the same and it gives the same z with p value. The sample was appropriate for this study. The thumb rile says n>100 and we have samples size of n>500. Therefore since the size is more than the thumb rule then the sample was appropriate for the study. There are possible limitations to this study. These limitations are that after calculation we cannot define which vaccine is better. Assuming by thumb rule that data follow normal distribution, there’s no evidence that it actually follows approximated normal distribution. In order to conduct a follow up study to this one is by comparing paired test. This would be reliable because these are independent samples. Practical significance is whether the differences are large enough to be out of value in practical sense. Statistical significance is the unlikelihood’s that mean is different observed in the sample have occurred due to sample error (2012).
(2012).StatisticalVersusPracticalSignificance.UniversityofGuelphNumeracyProject.Retrieved from https://atrium.lib.uoguelph.ca/xmlui/bitstream/handle/10214/1869/A_Statistical_versus_Practical_Significance.pdf?sequence=7