stats quiz ch 9&10.docx - Question 1 0.5 out of 0.5 points A research study is investigating the effects of studying French one two or three hours

stats quiz ch 9&10.docx - Question 1 0.5 out of 0.5...

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Question 1 0.5 out of 0.5 pointsA research study is investigating the effects of studying French one, two, or three hours weekly between 4thgraders and 9thgraders. How would thisfactorial design be best described?Selected Answer: C. 3x2Question 2 0.5 out of 0.5 pointsResearch study: The Inventory of Personal Attitudes (IPA) is a survey that consists of 30 questions with Likert scale answers ranging from 1 – 7 for a possible summed score between 30 and 210. Higher scores indicate a better attitude toward life in general. There are two subscales within the survey: life and confidence. When respondents answered the IPA survey, several demographic characteristics were also surveyed. One such characteristic was work status, which was measured as unemployed, part-time, and full-time. The research question is: “Is there a difference in IPA scores based on work status?What is the null hypothesis for this study?Selected Answer: There is no difference in IPA scores based on work status.Question 3 0.5 out of 0.5 pointsDr. Duck decided to work very hard and control all aspects of his study he could think of. He randomly selected subjects, randomly assigned them to groups, measured his dependent variable twice to insure accuracy, and documented all aspects of the treatment his groups received. Yet there was still within-group variability. What did Dr. Duck forget?
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Selected Answer: both A and B aboveQuestion 4 0.5 out of 0.5 pointsResearch study: The Inventory of Personal Attitudes (IPA) is a survey that consists of 30 questions with Likert scale answers ranging from 1 – 7 for a possible summed score between 30 and 210. Higher scores indicate a better attitude toward life in general. There are two subscales within the survey: life and confidence. When respondents answered the IPA survey, several demographic characteristics were also surveyed. One such characteristic was work status, which was measured as unemployed, part-time, and full-time. The research question is: “Is there a difference in IPA scores based on work status?”Descriptives TableVariableNMeanSDUnemployed101142.6632.36Part-Time148153.8927.86Full-Time410154.6026.52Total659152.6128.07Test of Homogeneity of VarianceLevene Statisticdf1df2Sig.2.55426560.079ANOVA Source TableSourceSum of SquaresdfMean SquareFSigBetween 11,864.74BDG.001
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GroupsWithin GroupsA656ETotal518,434.33CWhat value belongs where the "C" is in the source table?Selected Answer: 658Question 5 0.5 out of 0.5 pointsResearch study: The Inventory of Personal Attitudes (IPA) is a survey that consists of 30 questions with Likert scale answers ranging from 1 – 7 for a possible summed score between 30 and 210. Higher scores indicate a better attitude toward life in general. There are two subscales within the survey: life and confidence. When respondents answered the IPA survey, several demographic characteristics were also surveyed. One such characteristic was work status, which was measured as unemployed, part-time, and full-time. The research question is: “Is there a difference in IPA scores based on work status?”
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