# b’statistics’

b’nStatistics for Nursing Research: A Workbook for Evidence-Based Practice, 2nd EditionExercise 29: Calculating Simple Linear RegressionQuestions to Be GradedThe following questions refer to the section called xe2x80x9cData for Additional Computational Practicexe2x80x9d in Exercise 29 of Grove & Cipher, 2017.1.xc2xa0xc2xa0xc2xa0xc2xa0 If you have access to SPSS, compute the Shapiro-Wilk test of normality for the variable age (as demonstrated in Exercise 26). If you do not have access to SPSS, plot the frequency distributions by hand. What do the results indicate?A.xc2xa0xc2xa0 The distribution significantly deviated from normality.B.xc2xa0xc2xa0xc2xa0 The distribution did not significant from normality.Answer: Choose an item.2.xc2xa0xc2xa0xc2xa0xc2xa0 State the null hypothesis where age at enrollment is used to predict the time for completion of an RN to BSN program.A.xc2xa0xc2xa0 Age at enrollment predicts the number of months until completion of an RN to BSN program.B.xc2xa0xc2xa0xc2xa0 Age at enrollment does not predict the number of months until completion of an RN to BSN program.Answer: Choose an item.3.xc2xa0xc2xa0xc2xa0xc2xa0 What is b as computed by hand (or using SPSS)?A.xc2xa0xc2xa0 0.027B.xc2xa0xc2xa0xc2xa0 0.037C.xc2xa0xc2xa0xc2xa0 0.047D.xc2xa0xc2xa0 0.057Answer: Choose an item.4.xc2xa0xc2xa0xc2xa0xc2xa0 What is a as computed by hand (or using SPSS)?A.xc2xa0xc2xa0 10.76B.xc2xa0xc2xa0xc2xa0 11.76C.xc2xa0xc2xa0xc2xa0 12.76D.xc2xa0xc2xa0 13.76Answer: Choose an item.5.xc2xa0xc2xa0xc2xa0xc2xa0 Write the new regression equation.A.xc2xa0xc2xa0xc2xa0xc2xa0 xc5xb7 = 0.027x + 10.76B.xc2xa0xc2xa0xc2xa0 xc5xb7 = 0.037x + 10.76C.xc2xa0xc2xa0xc2xa0 xc5xb7 = 0.047x + 11.76D.xc2xa0xc2xa0 xc5xb7 = 0.057x + 11.76Answer: Choose an item.6.xc2xa0xc2xa0xc2xa0xc2xa0 How would you characterize the magnitude of the obtained R2 value? Provide a rationale for your answer.A.xc2xa0xc2xa0 R2 value is very low.B.xc2xa0xc2xa0xc2xa0 R2 value is very high.Answer: Choose an item.7.xc2xa0xc2xa0xc2xa0xc2xa0 How much variance in months to RN to BSN program completion is explained by knowing the studentxe2x80x99s enrollment age?A.xc2xa0xc2xa0 1.2%B.xc2xa0xc2xa0xc2xa0 2.4%C.xc2xa0xc2xa0xc2xa0 12%D.xc2xa0xc2xa0 24%Answer: Choose an item.8.xc2xa0xc2xa0xc2xa0xc2xa0 What was the correlation between the actual y values and the predicted y values using the new regression equation in the example?A.xc2xa0xc2xa0 0.11B.xc2xa0xc2xa0xc2xa0 0.155C.xc2xa0xc2xa0xc2xa0 0.346D.xc2xa0xc2xa0 0.49Answer: Choose an item.9.xc2xa0xc2xa0xc2xa0xc2xa0 Write your interpretation of the results as you would in an APA-formatted journal.Enter your answer here and select the xe2x80x9cCompletedxe2x80x9d choice in the dropdown menu. If more space is needed, please hit the Enter key from your computer.Answer: xc2xa0 Choose an item.10.xc2xa0 Given the results of your analyses, would you use the calculated regression equation to predict future studentsxe2x80x99 program completion time by using enrollment age as x? Provide a rationale for your answer.A.xc2xa0xc2xa0 Student age (x) did significantly predict months to completion (y). Therefore, the equaxc2xadtion will accurately predict future values of y.B.xc2xa0xc2xa0xc2xa0 Student age (x) did not significantly predict months to completion (y). Therefore, the equaxc2xadtion will not accurately predict future values of y.Answer: Choose an item.Exercise 35: Calculating Pearson Chi-SquareQuestions to Be GradedThe following questions refer to the section called xe2x80x9cData for Additional Computational Practicexe2x80x9d in Exercise 35 of Grove & Cipher, 2017.1.xc2xa0xc2xa0xc2xa0xc2xa0 Do the example data in Table 35-2 meet the assumptions for the Pearson xcfx872 test? Provide a rationale for your answer.A.xc2xa0xc2xa0 Yes, the data meet the 2 assumptions.B.xc2xa0xc2xa0xc2xa0 No, the data do not meet the 2 assumptions.C.xc2xa0xc2xa0xc2xa0 Yes, the data meet the 3 assumptions.D.xc2xa0xc2xa0 No, the data do not meet the 3 assumptions.Answer: Choose an item.2.xc2xa0xc2xa0xc2xa0xc2xa0 Compute the xcfx872 test. What is the xcfx872 value?A.xc2xa0xc2xa0xc2xa0xc2xa0 11.93xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0 B.xc2xa0xc2xa0xc2xa0xc2xa0 12.93xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0 C.xc2xa0xc2xa0xc2xa0xc2xa0 13.93xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0xc2xa0 D.xc2xa0xc2xa0xc2xa0xc2xa0 14.93 Answer: Choose an item.3.xc2xa0xc2xa0xc2xa0xc2xa0 Is the xcfx872 significant at xcexb1 = 0.05? Specify how you arrived at your answer.A.xc2xa0xc2xa0 Yes, by comparing it with the critical value.B.xc2xa0xc2xa0xc2xa0 No, by comparing it with the critical value.Answer: Choose an item.4.xc2xa0xc2xa0xc2xa0xc2xa0 If using SPSS, what is the exact likelihood of obtaining the xcfx872 value at least as extreme as or as close to the one that was actually observed, assuming that the null hypothesis is true?A.xc2xa0xc2xa0xc2xa0xc2xa0 0.1%B.xc2xa0xc2xa0xc2xa0xc2xa0 0.5%C.xc2xa0xc2xa0xc2xa0xc2xa0 1%D.xc2xa0xc2xa0xc2xa0xc2xa0 5%Answer: Choose an item.5.xc2xa0xc2xa0xc2xa0xc2xa0 Using the numbers in the contingency table, calculate the percentage of antibiotic users who tested positive for candiduria.A.xc2xa0xc2xa0xc2xa0 15.5%B.xc2xa0xc2xa0xc2xa0 25.9%.C.xc2xa0xc2xa0xc2xa0 47.6%D.xc2xa0xc2xa0xc2xa0 0%Answer: Choose an item.6.xc2xa0xc2xa0xc2xa0xc2xa0 Using the numbers in the contingency table, calculate the percentage of non-antibiotic users who tested positive for candiduria.A.xc2xa0xc2xa0 15.5%B.xc2xa0xc2xa0xc2xa0 25.9%.C.xc2xa0xc2xa0xc2xa0 47.6%D.xc2xa0xc2xa0 0%Answer: Choose an item.7.xc2xa0xc2xa0xc2xa0xc2xa0 Using the numbers in the contingency table, calculate the percentage of veterans with candiduria who had a history of antibiotic use.A.xc2xa0xc2xa0 0%B.xc2xa0xc2xa0xc2xa0 10%.C.xc2xa0xc2xa0xc2xa0 15%D.xc2xa0xc2xa0 100%Answer: Choose an item.8.xc2xa0xc2xa0xc2xa0xc2xa0 Using the numbers in the contingency table, calculate the percentage of veterans with candiduria who had no history of antibiotic use.A.xc2xa0xc2xa0 0%B.xc2xa0xc2xa0xc2xa0 10%.C.xc2xa0xc2xa0xc2xa0 15%D.xc2xa0xc2xa0 100%Answer: Choose an item.9.xc2xa0xc2xa0xc2xa0xc2xa0 Write your interpretation of the results as you would in an APA-formatted journal.Enter your answer here and select the xe2x80x9cCompletedxe2x80x9d choice in the dropdown menu. If more space is needed, please hit the Enter key from your computer.Answer: xc2xa0 Choose an item.10.xc2xa0 Was the sample size adequate to detect differences between the two groups in this example? Provide a rationale for your answer.A.xc2xa0xc2xa0xc2xa0 The sample size was adequate to detect differences between the two groups because a significant difference was found, p = 0.001.B.xc2xa0xc2xa0xc2xa0 The sample size was not adequate to detect differences between the two groups because no significant difference was found, p >0.05.Answer: Choose an item.GradingPlease do not add or delete a row or column for the following grading table. If you have a problem with the drop-down lists, then you can enter your answers in the second column.xc2xa0 If you use the drop-down lists, the instructor will update your answers in the table. Thanks ‘

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