STAT231 - Practice

# STAT231 - Practice - Waterloo SOS Students Offering Support...

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Unformatted text preview: Waterloo SOS: Students Offering Support STAT 231 Final Exam-AID Regression and Response Model Practice Tutor: Michaelangelo Finistauri Course Coordinator: Anton Markov E-mail: [email protected] Students Offering Support national sponsors: Response Model Expample Part 1- For a long night of playing Team Fortress 2, a sniper was curious is his overall heatshot-to-kills ratio had improved in the game after he started drinking Red Bull and suffering sleep deprivation. He had taken his ratio every hour for 12 hours before he started supplementing sleep with Red Bull. He had continued to tally his ratio until he suffered a heart attack 10 hours later from too much Red Bull. His results were: Before Red Bull Average: 0.83, for 12 hours. After Red Bull Average: 0.57, for 10 hours. The standard error for the whole game play was 0.0056. Test that these two values are equal. Solution We are testing the hypothesis H μ 1 = μ 2 with alternative hypothesis H A μ 1 negationslash = μ 2 where mu 1 is the average for the first 12 hours and μ 2 is the average for the 10 hours with Red Bull. Since this is an example of two proportions with different sample sizes, we con- struct our discrepency measure as follows: D = | ˜ μ 1 − ˜ μ 2 | ˜ σ radicalBig 1 n 1 + 1 n 2 Using our best estimates to determine a test statistic:...
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## This note was uploaded on 08/09/2009 for the course STAT 231 taught by Professor Cantremember during the Spring '08 term at Waterloo.

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STAT231 - Practice - Waterloo SOS Students Offering Support...

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