Homework answers / question archive / Craig Pelton is concerned about how alcohol is influencing academic performance at Greendale College, He has collected information on: CGPA: College GPA (out of 4

Craig Pelton is concerned about how alcohol is influencing academic performance at Greendale College, He has collected information on: CGPA: College GPA (out of 4

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Craig Pelton is concerned about how alcohol is influencing academic performance at Greendale College, He has collected information on: CGPA: College GPA (out of 4.3) Attend: Class attendance (% of classes attended) Female: Whether an individual identifies as female (1) or not (0) Drinks: Number of alcoholic drinks consumed per week (# of drinks) Write down a model that allows you to estimate the effect of alcoholic drinks on GPA while controlling for attendance and gender. The model should allow you to make statements such as "A student drinking 10% more alcohol per week is estimated to change GPA by "X' points". With this model, how would you test that alcohol consumption has no influence on GPA? Clearly state your null and alternative hypothesis, how you would calculate your test statistic, how your test statistic is distributed, and how you would come to a conclusion about your test. + Drag and drop your files or click to browsall Q3 b (4 points) Write down a model that would allow you to test whether alcohol consumption has different effects on GPA for those who identify as female Time vs those who do not. ol senhol on 13BA haburan there whe identifi an fample go these that da

+ Drag and drop your files or click to browse... Q3 b (4 points) Write down a model that would allow you to test whether alcohol consumption has different effects on GPA for those who identify as female vs those who do not. How would you test that there are no differences in the effects of alcohol on GPA between those who identify as female and those that do not? State your null and alternative hypothesis, indicate how you would calculate your test statistic and how you would form a conclusion about your test. + Drag and drop your files or clicks to browse.. Q3 c (4 points) Suppose instead of allowing % changes in alcohol consumption to influence GPA, the Dean thinks that you should divide up alcohol users into different categories: non-drinker: those who consume 0 alcoholic drinks per week. Time light-drinker: those who consume between 1 and 6 drinks per week

+ Drag and drop your files or click to browse... Q3 c (4 points) Suppose instead of allowing % changes in alcohol consumption to influence GPA, the Dean thinks that you should divide up alcohol users into different categories: non-drinker: those who consume 0 alcoholic drinks per week! light-drinker: those who consume between 1 and 6 drinks per week. med-drinker: those who consume 7 and 18 drinks per week. heavy-drinker: those who consume more than 18 drinks per week. Using these categories, write down a model that allows you to estimate the effects of drinking on GPA by alcohol-user category (note: you do not need to allow the influence to depend on gender ). With this model, how would you test that alcohol consumption has no influence on GPA? Clearly state your null and alternative hypothesis, how you would calculate your test statistic, how it is distributed, and how you would form a conclusion about the test. + Drag and drop your files or click to browse... Before you submit, please ensure that your pages are in order and rotated correctly. You will not be able to resubmit your work after the timer runs out. Time