SAMPLE SAMPSIZE FAILURES
     1       17        0
     2       19        1
     3       18        1
     4       18        1
     5       14        0
     6       13        0
     7       15        1
     8       20        0
     9       15        0
    10       19        0
    11       18        0
    12       14        1
    13       17        0
    14       18        0
    15       14        1
    16       17        0
    17       14        1
    18       18        1
    19       16        0
    20       14        0
    21       13        1
    22       17        3
    23       16        3
    24       16        1
    25       11        0
    26       18        4
    27       20        2
    28       11        2
    29       13        0
    30       18        1