The SAS System                           1

                         Obs    flip    count

                          1       0       29
                          2       1       21

                            The SAS System                           2

                         The TTEST Procedure

                           Variable:  flip

Frequency: count

     N        Mean     Std Dev     Std Err     Minimum     Maximum

    50      0.4200      0.4986      0.0705           0      1.0000

        Mean       95% CL Mean        Std Dev      95% CL Std Dev

      0.4200      0.2783   0.5617      0.4986      0.4165   0.6213

                        DF    t Value    Pr > |t|

                        49      -1.13      0.2621