Higher memory number indicates better memory performance. Remember to report the exact p value provided by SPSS output – simply reporting p.05 is not acceptable (unless SPSS output states p=.000 – in that case you can report p<.001).Ĭreate a data file in SPSS using the following memory scores for this sample of 15 fictional patients with dementia: You will need to take a screen shot of your data view if necessary, or copy and paste your output into the spaces below. Remember you must submit all of your work within this word document. Don’t forget to include the statistical statement and a decision about the null hypothesis. Show your work (use at least two decimal places throughout).ġ6) Write your conclusion in APA format. The mean health score for all employees was 85, with a standard deviation of 3.1.ġ4) Conduct the z-test. The average health score (higher = better) of the 45 employees who logged enough hours was 89. Then, state whether the null hypothesis would be accepted or rejected:Ī company decides to offer a monetary incentive for employees who log a specified number of hours spent exercising in an attempt to improve employee health.
If you know the sample mean for worker satisfaction is 77.3, and the estimated standard error of the mean is 11.7, and the sample size is 30, calculate the 95% confidence interval for a non-directional test (show all your work):Ĩ) Confidence Interval (lower and upper limits):Ĭalculate the critical degrees of freedom and identify the critical t value for a single-sample t test in each of the following situations, using p=.05 for all scenarios. Given a population standard deviation of 40, calculate the standard deviation of the mean ( given the following sample sizes (show all your work): The degrees of freedom for this t-test are (answer here), which means there were (answer here) total participants in the researcher’s sample.īased on the information in question #4 above and knowing it is a two-tailed test, the critical t value is: (answer here) If the z–score for a sample mean is 1.75, and it was a one-tailed z-test, we (answer here) the null hypothesis.Ī researcher reports the results of a single-sample t-test as t(28) = 1.80. The critical value for a one-tailed one sample z- test is +/-: (answer here) These questions are based on the concepts covered in this week’s assigned readings and presentations.įill in the highlighted blanks with the best word or words.įor single-sample statistical tests, you choose a (answer here) test if the population variance is known, and a (answer here) test if the population variance is unknown. Answer any written questions (such as the text-based questions or the APA Participants section) in the appropriate place within the same file. Complete all analyses in SPSS, then copy and paste your output and graphs into your homework document file. Example: HW6_JohnDoe_510B01īe sure you have reviewed this module/week’s lesson and presentations along with the practice data analysis before proceeding to the homework exercises.
#Run an average of a single question in spss 25 full
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