Math lab module 8

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Walden University *

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8823

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Statistics

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Apr 3, 2024

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Uploaded by ctankersley2005

Module 8 lab Case Processing Summary Cases Valid Missing Total N Percent N Percent N Percent dep_score 40 100.0% 0 0.0% 40 100.0% Tests of Normality Kolmogorov-Smirnov a Shapiro-Wilk Statistic df Sig. Statistic df Sig. dep_score .071 40 .200 * .984 40 .847 *. This is a lower bound of the true significance. a. Lilliefors Significance Correction

 What are the null and alternative hypotheses in this example problem? There is no difference in depression levels between the sample and population. As far as the alternate hypothesis, there is a difference in mean depression level.  Based on these hypotheses, briefly describe what the researcher is interested in finding out through this one-sample t-test. They are interested in finding if the mean depression level of the sample and population are significantly different.  List and briefly describe the assumptions that need to be met to conduct a one-sample t-test. There are 4 assumptions. The first assumption is that there should only be one variable and it should be continuous. The next is that Data needs to be independent. Should not be correlated/related. The next is there should not be any significant outliers. Finally the fourth assumption is that the dependent variable should be approximately normally distributed.  Provide SPSS output to demonstrate whether these assumptions are met in this example. See above.  Conduct a one-sample t-test and briefly describe what you found. I found there are no significant outliers, and the data is approximately normally distributed.  What was your conclusion? Did you reject the null hypothesis (find a significant difference) or fail to reject the null hypothesis (fail to find a significant difference)? I failed to reject the null hypothesis, based on the data provided.

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