/* nursingwritersbureau.com theme functions */ /* nursingwritersbureau.com theme functions */ {"id":5751,"date":"2020-08-19T07:36:27","date_gmt":"2020-08-19T07:36:27","guid":{"rendered":"https:\/\/nursingwritersbureau.com\/?p=5751"},"modified":"2020-08-19T07:36:27","modified_gmt":"2020-08-19T07:36:27","slug":"hypothesis-testing-with-two-groups-and-anova","status":"publish","type":"post","link":"https:\/\/nursingwritersbureau.com\/hypothesis-testing-with-two-groups-and-anova\/","title":{"rendered":"Hypothesis Testing With Two Groups And ANOVA"},"content":{"rendered":"
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Assessment Instructions<\/h3>\n<\/div>\n
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Answer the questions below, following the Submission Requirements as specified at the end of the assessment. To calculate t when needed, refer to the\u00a0T-Table for Assessment 4\u00a0document linked in the Resources under the Required Resources heading.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Assessment Concepts<\/caption>\n
Question<\/th>\nTopic<\/th>\n<\/tr>\n<\/thead>\n
Question 1<\/th>\nStandard Error of the Difference Between the Means<\/td>\n<\/tr>\n
Question 2<\/th>\nStandard Error of the Difference Between the Means<\/td>\n<\/tr>\n
Question 3<\/th>\nSPSS: Independent Samples\u00a0t\u00a0<\/em>Test<\/td>\n<\/tr>\n
Question 4<\/th>\nSPSS: Independent Samples\u00a0t<\/em>\u00a0Test<\/td>\n<\/tr>\n
Question 5<\/th>\nt<\/em>\u00a0Test with Related Samples<\/td>\n<\/tr>\n
Question 6<\/th>\nSPSS: Paired Samples\u00a0t<\/em>\u00a0Test<\/td>\n<\/tr>\n
Question 7<\/th>\nSPSS: Paired Samples\u00a0t<\/em>\u00a0Test<\/td>\n<\/tr>\n
Question 8<\/th>\nConfidence Intervals<\/td>\n<\/tr>\n
Question 9<\/th>\nANOVA Logic: Partitioning of Deviation Scores<\/td>\n<\/tr>\n
Question 10<\/th>\nANOVA Logic: From Mean Squares to F<\/td>\n<\/tr>\n
Question 11<\/th>\nANOVA Summary Table<\/td>\n<\/tr>\n
Question 12<\/th>\nSPSS: One-Way ANOVA<\/td>\n<\/tr>\n
Question 13<\/th>\nSPSS: One-Way ANOVA<\/td>\n<\/tr>\n
Question 14<\/th>\nSPSS: Tukey HSD Test<\/td>\n<\/tr>\n
Question 15<\/th>\nSPSS: Tukey HSD Test<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Question 1<\/h4>\n

A researcher examines the results of two separate studies. In the first study, the difference between Group A and Group B is two points. However, the \u03c3M1-M2<\/sub>\u00a0is large, and the difference is not significant. In the second study, the difference between Group A and Group B is also two points. However, the \u03c3M1-M2<\/sub>\u00a0is small, and the difference is significant. What might be the reason for the difference in the \u03c3M1-M2<\/sub>\u00a0across the two studies?<\/p>\n

Question 2<\/h4>\n

A researcher is examining the effects of a new anxiety drug. The \u03c3M<\/sub>\u00a0for the experimental group (group receiving the antianxiety drug) is 1.4, while the \u03c3M<\/sub>\u00a0for the control group is 1.22. Calculate the \u03c3M1 \u2013 M2<\/sub>\u00a0.<\/p>\n

Question 3<\/h4>\n

Complete the following steps:<\/p>\n

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  1. Open the SPSS file\u00a0assessment4a.sav\u00a0linked in the Resources under the Required Resources heading.<\/li>\n
  2. At the top of the screen, click on\u00a0Analyze, select\u00a0Compare Means, then select\u00a0Independent-Samples T Test.<\/li>\n
  3. Click on\u00a0Satisfaction Score\u00a0(the dependent variable), then click on the\u00a0arrow\u00a0next to\u00a0Test Variable(s)\u00a0to send it over to the Test Variable box.<\/li>\n
  4. Click on\u00a0Sample Group\u00a0(the independent variable), then click on the\u00a0arrow\u00a0next to\u00a0Grouping Variable\u00a0to send it over to the Grouping Variable box.<\/li>\n
  5. Click on\u00a0Define Groups\u00a0and enter A for Group 1 and B for Group 2. Click\u00a0Continue.<\/li>\n
  6. Click\u00a0OK\u00a0and copy and paste the output to your Word document.<\/li>\n<\/ol>\n

    Question 4<\/h4>\n

    A VP for a large clothing retailer is convinced that handing out coupons to customers in the store will leader to higher sales. To test this, she has her sales associates randomly select customers to either receive or not receive a $10-off, today-only coupon. As each customer leaves the store, the amount of his or her purchase is recorded. The recorded data are in SPSS file\u00a0assessment4b.sav\u00a0linked in the Resources under the Required Resources heading.<\/p>\n

    Complete the following:<\/p>\n

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    1. Identify the IV and DV in this study.<\/li>\n
    2. State the null hypothesis and the directional (one-tailed) research hypothesis.<\/li>\n
    3. Run an Independent-Samples T Test using SPSS file\u00a0assessment4b.sav\u00a0and paste your output into your Word document. Can you reject the null hypothesis at \u03b1 = .05? Explain.<\/li>\n<\/ol>\n

      Question 5<\/h4>\n

      Identify whether independent samples were used, repeated measures were used, or matched samples were used in the following scenarios:<\/p>\n

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      1. A researcher wants to know whether men or women spend more money at the movie concession stand. He asks the concession clerk to identify the customer as male or female on each saved receipt.<\/li>\n
      2. A CPR instructor wants to know if her students are learning anything during her 90-minute training. She decides to quiz her students at the beginning of class and again at the end of class.<\/li>\n<\/ol>\n

        Question 6<\/h4>\n

        Complete the following steps:<\/p>\n

          \n
        1. Open the SPSS file\u00a0assessment4c.sav\u00a0linked in the Resources under the Required Resources heading.<\/li>\n
        2. At the top of the screen, click on\u00a0Analyze, select\u00a0Compare Means, then select\u00a0Paired-Samples T Test.<\/li>\n
        3. Click on\u00a0Preference for Grocery Store A\u00a0(storea), then click on the\u00a0arrow\u00a0to send it over to the Variable 1 box.<\/li>\n
        4. Click on Preference for\u00a0Grocery Store B\u00a0(storeb), then click on the\u00a0arrow\u00a0to send it over to the Variable 2 box.<\/li>\n
        5. Click\u00a0OK, then copy and paste the output to your Word document.<\/li>\n<\/ol>\n

          Question 7<\/h4>\n

          A study was conducted on information retention in 40 students (20 pairs) after students conducted online research or watched a movie on a given topic. Students were matched on gender and age. Data provided in the SPSS file below represent quiz scores after students completed their studying.<\/p>\n

          Complete the following:<\/p>\n

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          1. Open the SPSS file\u00a0assessment4d.savlinked in the Resources under the Required Resources heading.<\/li>\n
          2. Conduct a Paired-Samples T Test.<\/li>\n
          3. Compare t with the one-tailed critical t at the .01 \u03b1 level. Did the students who studied online score significantly higher on the quiz? Give a decision about the null.<\/li>\n<\/ol>\n

            Question 8<\/h4>\n

            Refer back to your SPSS output from Assessment 4 Question 3. Based on that output, what is the 95 percent confidence interval of the difference?<\/p>\n

            Question 9<\/h4>\n

            Assume the within-group deviation is 108.45 and the between-group deviation is 48.68. Calculate the total deviation.<\/p>\n

            Question 10<\/h4>\n

            Assume MSbet<\/sub>\u00a0= 80 and MSwith<\/sub>\u00a0= 20. What is F?<\/p>\n

            Question 11<\/h4>\n

            Answer questions a\u2013d using the following ANOVA summary table:<\/p>\n\n\n\n\n\n\n\n
            ANOVA Summary Table<\/caption>\n
            <\/th>\nSS<\/em><\/th>\ndf<\/em><\/th>\nMS<\/em><\/th>\nF<\/em><\/th>\n<\/tr>\n<\/thead>\n
            Between Groups<\/th>\n283.32<\/td>\n4<\/td>\n70.83<\/td>\n8.16<\/td>\n<\/tr>\n
            Within Groups<\/th>\n390.60<\/td>\n45<\/td>\n8.68<\/td>\n<\/td>\n<\/tr>\n
            Total<\/th>\n673.92<\/td>\n49<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
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            1. How many groups participated?<\/li>\n
            2. How many participants were in each group (assuming equal number of participants per group)?<\/li>\n
            3. What is the critical value of F (4,45) at the .01 level? Refer to the\u00a0F-Table for Assessment 4\u00a0document linked in the Resources under the Required Resources heading.<\/li>\n
            4. How confident are you (0\u2013100 percent), given a significant result at the .01 level, that rejecting the null hypothesis is not due to chance? Additionally, what is the probability that you have made a Type 1 error?<\/li>\n<\/ol>\n

              Question 12<\/h4>\n

              Complete the following steps:<\/p>\n

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              1. Open the SPSS file\u00a0assessment4e.sav\u00a0linked in the Resources under the Required Resources heading.<\/li>\n
              2. At the top of the screen, click on\u00a0Analyze, select\u00a0Compare Means, then select\u00a0One-Way ANOVA.<\/li>\n
              3. Click on Quiz Score (quizscore), then click on the\u00a0arrow\u00a0to send it over to the\u00a0Dependent List\u00a0box.<\/li>\n
              4. Click on\u00a0Student Group\u00a0(studentgroup), then click on the\u00a0arrow\u00a0to send it over to the\u00a0Factor\u00a0box.<\/li>\n
              5. Click\u00a0OK,\u00a0and copy and paste the output to your Word document.<\/li>\n<\/ol>\n

                Question 13<\/h4>\n

                A teacher believes that kindergartners who attend school for a full day are more proficient readers than those children who attend for a half day or those who are homeschooled. At the end of the school year, she gives a reading test to 20 full-day kindergartners, 20 half-day kindergartners, and 20 home-schooled kindergartners. Data provided in the SPSS file\u00a0assessment4f.sav\u00a0below represent reading scores for each group:<\/p>\n

                Complete the following steps:<\/p>\n

                  \n
                1. Open the SPSS file\u00a0assessment4f.sav\u00a0linked in the Resources under the Required Resources heading.<\/li>\n
                2. Conduct a One-Way ANOVA in SPSS.<\/li>\n
                3. State the null hypothesis.<\/li>\n
                4. Paste the ANOVA table from SPSS into your Word document.<\/li>\n
                5. Report your results in APA format (as you might see them reported in a journal article).<\/li>\n<\/ol>\n

                  Question 14<\/h4>\n

                  Complete the following steps:<\/p>\n

                    \n
                  1. Open the SPSS file\u00a0assessment4e.sav.<\/li>\n
                  2. At the top of the screen, click on\u00a0Analyze, select\u00a0Compare Means, then select\u00a0One-Way ANOVA.<\/li>\n
                  3. Click on\u00a0Quiz Score\u00a0(quizscore), then click on the\u00a0arrow\u00a0to send it over to the\u00a0Dependent List\u00a0box.<\/li>\n
                  4. Click on\u00a0Student Group\u00a0(studentgroup), then click on the\u00a0arrow\u00a0to send it over to the\u00a0Factor\u00a0box.<\/li>\n
                  5. Click on\u00a0Post Hoc, then mark the box next to\u00a0Tukey. Click\u00a0Continue.<\/li>\n
                  6. Click\u00a0OK, and copy and paste the output to your Word document.<\/li>\n<\/ol>\n

                    Question 15<\/h4>\n

                    Complete the following steps:<\/p>\n