NURS 898 (Assignment #2) NURS 717 HW #6 Question 1) A random sample of 10 nursing student were given anxiety test. The higher score means more anxious. Test if the median score for the population...

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NURS 898 (Assignment #2) NURS 717 HW #6 Question 1) A random sample of 10 nursing student were given anxiety test. The higher score means more anxious. Test if the median score for the population sample for anxiety is 50 at alpha .05. (Use Sign test). The following is the result of test: (each part 7 points total 28 point) Either calculate by hand or use the following output to answer the questions. Tests for Location: Mu0=50 Test Statistic p Value Student's t t 2.111245 Pr > |t| 0.0639 Sign M 3.5 Pr >= |M| 0.0391 Signed Rank S 17.5 Pr >= |S| 0.0391 a. What is the hypothesis testing for this test? 1. H0: The population median is 50 H1: the population median is not 50 2. H0: The population median is 50 H1: the population median is > 50 3. H0: The population median is 50 H1: the population median is < 50="" b.="" what="" is="" the="" p="" value="" for="" sign="" test="" for="" this="" problem?="" 1.="" .0105="" 2.="" .0391="" 3.="" .0192="" 4.="" .0739="" c.="" what="" is="" your="" conclusion="" based="" on="" the="" p-value="" of="" the="" sign="" test?="" 1.="" since="" p="" value="" (.0391)="" is="" less="" than="" alpha="" (.05)="" we="" reject="" null="" and="" conclude="" alternative="" the="" population="" median="" is="" not="" 50.="" 2.="" since="" p="" value="" (.0391)="" is="" less="" than="" alpha="" (.05)="" we="" fail="" to="" reject="" null="" and="" cannot="" conclude="" alternative="" the="" population="" median="" is="" not="" 50.="" d.="" what="" type="" of="" parametric="" test="" you="" can="" use="" for="" this="" problem="" if="" you="" have="" larger="" sample?="" 1.="" one="" sample="" proportion="" 2.="" one="" sample="" variance="" 3.="" one="" sample="" t-test="" question="" 2)="" a="" random="" sample="" of="" 10="" nursing="" student="" given="" anxiety="" test="" before="" and="" after="" some="" intervention.="" we="" want="" to="" know="" if="" we="" can="" conclude="" that="" the="" intervention="" was="" effective="" to="" decrease="" the="" anxiety="" level="" of="" nursing="" student?="" let="" alpha="" be="" at="" 05.="" the="" higher="" score="" means="" more="" anxious.="" the="" following="" is="" the="" result="" of="" test:="" (each="" part="" 9="" points="" total="" 36="" point)="" either="" calculate="" by="" hand="" or="" use="" the="" following="" output="" to="" answer="" the="" questions.="" tests for location: mu0="0" test="" statistic="" p="" value="" student's="" t="" t="" -1.70678="" pr=""> |t| 0.1220 Sign M -2 Pr >= |M| 0.3438 Signed Rank S -15 Pr >= |S| 0.1387 a. What is the hypothesis testing for this test? 1. H0: Ud= 0 H1: Ud <0 2.="" h0:="" ud="0" h1:="" ud="" not="" equal="" 0="" 3.="" h0:="" ud="0" h1:="" ud="">0 b. What is the t statistics for this test? 1. 2.50 2. -2.50 3. 1.58 4. -1.71 c. What is your conclusion based on the P-value of the Sign Ranked test? 1. Since P value (.1387/2=.07) is not less than alpha (.05) we fail to reject null and cannot conclude that the intervention was effective to decrease the anxiety level of nursing students at alpha .05. 2. Since P value (.1387/2=.07) is not less than alpha (.05) we reject null and conclude that the intervention was effective to decrease the anxiety level of nursing students at alpha .05. d. What type of parametric test you can use for this problem if you have larger sample? 1. One sample test 2. One sample proportion 3. One sample paired test or matched T-test 4. One sample variance Question 3) Let say for question 2 if we measure the anxiety score before and after intervention for male and female students. (part a 8 points and part b 7 points total 15 points) a. What statistical test would you use to test the differences for male and female? 1. Wilcoxon sign ranked test. 2. Spearman correlation 3. Kruskal –Wallis test. 4. None of above b. What type of parametric test you can use for this problem if you have larger sample? 1. One sample test 2. Two proportion tests 3. Two sample Ttest with the difference of after and before anxiety score. 4. None of above Question 4) The following is the SAS out for the Kruskal-Wallis one way analysis for Coping scale by age group. (each part 7 points total 21 point) a. What value is the test statistics? 1. 2.49 2. 3.56 3. 1.49 4. None of above b. What is your conclusion for this test? 1. The results indicate there is no statistically significant difference among the three age groups for coping P value =.4736. 2. The results indicate there is statistically significant difference among the three age groups for coping P value =.4736. c. What type of parametric test you can use for this problem if you have larger sample? 1. One sample test 2. Two proportion tests 3. Two sample Ttest with the difference of after and before anxiety score. 4. Analysis of Variance (One Way ANOVA) Kruskal-Wallis One Way Analysis by age group Analysis of Variance for Variable TCOPE Classified by Variable AGESG AGESG N Mean 31-45 yr 145 105.434483 18-30 yr 61 103.311475 greater 45 73 107.273973 Source DF Sum of Squares Mean Square F Value Pr > F Among 2 521.866673 260.933336 0.8171 0.4428 Within 276 88137.230101 319.337790 Average scores were used for ties. Wilcoxon Scores (Rank Sums) for Variable TCOPE Classified by Variable AGESG AGESG N Sum of Scores Expected Under H0 Std Dev Under H0 Mean Score 31-45 yr 145 20440.0 20300.0 673.159780 140.965517 18-30 yr 61 7916.0 8540.0 556.897058 129.770492 greater 45 73 10704.0 10220.0 592.211450 146.630137 Average scores were used for ties. Kruskal-Wallis Test Chi-Square 1.4950 DF 2 Pr > Chi-Square 0.4736 1