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Problem Set 3.5: One-Sample t test in SPSS Criterion:…
Problem Set 3.5: One-Sample t test in SPSSCriterion: Calculate a one-sample t test in SPSS.Data: Riverbend City online news advertises that it is read longer than the national news. The mean for national news is 8 hours per week. The following sample of the Riverbend City online news readers is: 5, 7, 6, 2, 4, 8, 5, 4, 18, 21, 8, 7, 4, 5, 6.Instructions: Complete the following:Enter the data from Problem Set 3.5 into SPSS and name the variable as Time.In the Toolbar, click Analyze, select Compare Means, and then select One-Sample t Test.Select Time, then click Arrow to send it over to the right side of the table. In the box labeled Test Value, enter 8.Click OK and copy and paste the output into the Word document.State the nondirectional hypothesis. : ; this corresponds to a two-tail test, t-test for one mean using unknown population standard deviation.State the critical t for a = .05 (two tails). -.493; Image transcription text-… Show more Answer the following: Is the length of viewing for Riverbend City online news significantly different than the population mean? Explain. Since t =-.493 it can be concluded that the null hypothesis is not rejected due to having a critical value of 2.145; t= -.493 ≤ . there is not enough evidence the population mean µ is not different from 8 at a significance level of 0.05. One-Sample Statistics NMeanStd. DeviationStd. Error MeanTime157.33335.232681.35107 One-Sample Test Test Value = 8tdfSig. (2-tailed)Mean Difference95% Confidence Interval of the DifferenceLowerUpperTime-.49314.629-.66667-3.56442.2311 Problem Set 3.6: Confidence IntervalsCriterion: Calculate confidence intervals using SPSS.Data: Use the SPSS output from Problem Set 3.5 above.Instructions: Based on the SPSS output from Problem Set 3.5, including a test value (population mean) of 8, calculate the 95% confidence interval. Problem Set 3.7: Independent Samples t TestCriterion: Identify IV, DV, and hypotheses and evaluate the null hypothesis for an independent samples t test.Data: Use the information from Problem Set 3.7.Instructions: Complete the following:a. Identify the IV and DV in the study. _____________________________________b. State the null hypothesis and the directional (one-tailed) alternative hypothesis. ___________________________________________________c. Can you reject the null hypothesis at α = .05? Explain why or why not. ___________________________________________________
Statistics and Probability
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