Task
1) A study was conducted on an incomeenhancing course advertised on late night "infomercial". Twelve subjects were randomly selected and their annual incomes was recorded for each subject, both before taking the course and one year after taking the course. The data is shown below.
Annual Income ($1,000's) subject Before course After course 1 33.6 45.2 2 65.1 62.2 3 24.8 27.9 4 46.2 46.3 5 78.4 65.3 6 84.2 98.5 7 21.5 20.2 8 33.8 31.3 9 52.5 71.9 10 64.3 63.8 11 35.1 41.0 12 49.3 55.3 question 2) A student group wishes to know the typical GPA of firstyear college students. Assuming a normal population, test the claim that the mean GPA of a firstyear college student is at least 3.00, based on the random sample given below. Also find the 95% confidence interval for the true mean GPA of the first year college students and interpret the interval. Student GPA 1 3.25 2 3.5 3 3.33 4 3.75 5 2.67 6 2.83 7 4.0 8 2.83 9 3.5 10 3.75 

Detailed explanation: YES  
Specific requirements:
1a) Which test should you use to analyze the data and why? Be specific.
1b) Test the claim that taking the course improves annial income, on the average Ho: Ha: Pvalue: Alpha: Conclusion: 1c) Find the CI for the mean difference in income and interpret the interval: question2) Ho: Ha: Pvalue: alpha: Conclusion: The 95% Confidence Interval:

Subject  Mathematics 
Due By (Pacific Time)  05/14/2013 04:30 pm 
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