PSY week 5 final paper - Essay 1 Describe the research...

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Essay 1 Describe the research question for this experiment. In the experimented by the group of researchers wanted to determine which vaccine is more effective for preventing getting the flu. The research question stated above was to determine if a shot or a nasal spray vaccine was more effective in preventing the flu. What were the null and alternative hypotheses? The null hypothesis in the experiment was that nasal spray is more effective in preventing getting the flu. The alternative hypothesis is that shots are more effective vaccine in preventing the flu. Were the results of this test statistically significant? If so, why were they significant? Yes the results were statistically significant as there is 95% chance that the findings are true because the shots proved to be better for 0.16 proportions of people who got flu with shots vaccine in comparison to 0.24 proportions of people who got flu with nasal spray vaccine which is greater. Would the researchers reject or fail to reject the null hypothesis? The researchers would reject the null hypothesis as the p value is smaller than the significance level. There is very less probability of rejecting the null hypothesis when it is true. Hence, researchers would reject the null hypothesis and accept the alternative hypothesis. Do the results provide sufficient evidence to support the alternative hypothesis?
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The significance level and p value do provide very strong evidence to support the alternative hypothesis. As the p value is very small which suggests that there it is more likely that alternative hypothesis is true and null hypothesis is less likely to be true. Was the sample appropriate for this study? Explain your answer. Appropriate sample size plays a vital role in carrying out an experimental research. Appropriate sample size increases the chance of finding out a clinically entailing effect as well as ensures that the experimental study was cost effective and ethical. The sample taken was large and appropriate in my view to carry the study but the amount of sample size taken cannot be utilized to generalize the study. The appropriate sample size should be determined by precision analysis or power analysis (Ahn, 2015 pg 2). What are some possible limitations to this study? The possible limitations of the study are- The study cannot be generalized because the sample size taken is not sufficient for generalization of the experimental research. The difference proportion of people who got flu in both types of vaccine is not very significant as it may be possible that the sample chosen for nasal spray vaccine may have low immunity which led to the development of flu. T is only statistically significant and may not be necessary to be practically significant.
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