Null hypothesis Essay

Relapse rates of patients of acclivities that offer career services and job placement show no marked difference when compared to the mean of relapse rates for this entire population. Ha: Relapse rates of patients who completed a program that offered career services and job placement assistance are lower than the known population mean. The relapse rate as offered by The National Institute of Health on the drugless.

Gob website lists a range of 40-60% when considering both drugs and alcohol.I believe the specified range would be the confidence interval as determined by NIH. Develop a Research Question o Compare Dependent Means: In your area of psychology, formulate a research question that can be addressed using a paired data t-test. Describe the type of data you would collect and why they are paired data. State your null hypothesis and alternative hypothesis. Will relaxation technique sues such as meditation and breathing exercises done as a class before an exam alleviate the level of anxiety felt by test takers who exhibit test-taking anxiety and panic?I would collect data in the form of interviewing these test takers before the exams are scored.

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I am interested in how they would gauge their anxiety level during the regular exam in comparison to the one that began with relaxation techniques. Since I am measuring and determining two means here that are linked together for this test, the means/data are considered “paired”. Ho: Test takers will feel similar anxiety levels for both exams. Ha: Test takers will report feeling less anxious when c;lass relaxation exercises were done right before the exam.

Develop a Research Question to Compare Two Independent Means: In your area of psychology, formulate a research question that can be addressed using an independent samples t-test. Write down your question and why you feel that it is appropriate for an independent samples t-test. State your null hypothesis and your alternative hypothesis. When selecting an independent variable it will be helpful in Units 7 and 8 if you have an independent variable that has more than two levels, e. G.

, ethnicity, college major, state of residence, type of psychological therapy.In this unit you will only compare two levels but in unit 7 you will be adding en or more levels to your independent variable. For adult sons and daughters who have parents 65 and Older, how will the two groups (males vs. females) react to the news that their elderly parent(s) will need to move in with them and their spouse and kids? Will one group see it more as an honor to take in a parent? Will one group overwhelmingly react positively while the other one reacts negatively? Since am comparing two distinct populations (based on gender) the appropriate test is the independent samples t-test.I ill be compacting my data of males and females and their respective sample means against their corresponding general population mean. Ho: The population means of the sample women and the sample men of my study are equal.

Ha: The population means of the women and the men are not equal. In order to accept my alternate hypothesis I will need to see the evidence of this in the data after setting alpha. Predict Results: For your research question comparing two independent means, would you expect to reject your null hypothesis?Select a level for alpha and a possible p-value that justify rejecting the null.

Write a conclusion assuming that you have rejected the null and concluded the population means are not the same. After setting alpha at . 05 1 would more than likely accept my alternate hypothesis which means would reject my null hypothesis. P value measures how well my sample data support my stated null hypothesis. If the analysis report shows me a low p value statistic then I can assume the data I obtained are unlikely with a true null. If, for example, my p value is .

02 then I can reject the null.