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EDRM611: Applied Statistics

Homework for Statistics Lesson 14

Answer Completely.
Some calculations are required.
Due Thu., Aug. 4, 2005, 10:30:00.000, EDT.
Due on the teacher's desk in BH114.
  1. (5 points) Brian Small rolled a dice 1002 times and obtained the following results. Help him determine if the dice is fair by doing a chi square goodness of fit. Be sure to indicate your test statistic, tails, degrees of freedom, and critical test statistic.

    Pips:123456
    Observed181155141162153210
    Expected167167167167167167
    (Obs-Exp)           
    (O-E)2      
    (O-E)2/E      

     

     

     

     

     

     

     

     

     

     

  2. (2 bonus points) Indicate the value of any standardized residuals which are significant in problem 1.

     

  3. (5 points) Susie Giavan got tired of rolling her die and made up the following data. Help her teacher test for data fabrication by doing a chi-square goodness of fit. Be sure to indicate all four steps and values in testing this hypothesis.

    Pips:123456
    Observed147157167162172195
    Expected167167167167167167
    (Obs-Exp)           
    (O-E)2      
    (O-E)2/E      

     

     

     

     

     

     

     

     

     

  4. (5 bonus points) Hinkle, page 571, Chapter 21, Exercise 14.

     

     

     

     

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