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Statistics questions

Assignment:

Question 1. How do the 3rd grade boys' weight in Principal Ben's school compare to the national average (mean weight = 90, sd =15)? Provide the IV, DV, and best method of analysis.

Question 2.Are the student final exam scores in classroom A significantly different than the average of classroom B, 80%? Provide the IV, DV, and best method of analysis.

Question 3. Is there a significant difference in the mean height between the Eastern and Western Conference National Basketball League players? Provide the IV, DV, and best method of analysis.

Question 4. Is there a significant difference in depression symptoms measured before and after attending a 10-week group therapy program? Provide the IV, DV, and best method of analysis.

Question 5.It took 10 minutes and 5 seconds for Hal to run a mile last week when it was sunny but windy. Hal wants to compare his time to his friend's running time of 9 minutes and 45 seconds, completed in perfect conditions. The day Hal ran, the mean time was 10 minutes and 50 seconds with a standard deviation of 15 seconds. The day his friend ran, the mean time was 10 minutes and 10 seconds with a standard deviation of 10 seconds. Who had the higher percentile score? Provide the IV, DV, and best method of analysis.

Question 6. Are graduate students in psychology getting significantly less sleep than the recommended 8 hours? Provide the IV, DV, and best method of analysis.

Question 7. Is there a significant difference between first year post college incomes of graduates from public versus private institutions? Provide the IV, DV, and best method of analysis.

Question 8. Did student SAT scores increase significantly after attending a SAT prep course? Provide the IV, DV, and best method of analysis.

Question 9. The GRE Verbal section mean = 500 and standard deviation = 113; Math section mean = 525 and standard deviation = 135. Sam scored 600 on Verbal and 680 on Math: Which GRE section did Sam do best on when comparing to others who took the same test? Provide the IV, DV, and best method of analysis.

Question 10. Are the children in Archie Elementary School who are targeted as needing remedial reading classes watching significantly more than the recommended maximum of 10 hours of television weekly? Provide the IV, DV, and best method of analysis.

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## Q : Describe how you would build a regression model

Describe how you would build a regression model that could be used as a screening tool, with mention of the high correlation (colinearity) between SAT and ACT