Did students taught by Mrs. Jones perform significantly better on a Math test than those taught by Mrs. Johnson and Mrs. Brown? ...

         Did students taught by Mrs. Jones perform significantly better   on a Math test than those taught by Mrs. Johnson and Mrs. Brown?   Jones Johnson Brown       71 76 72       65 83 79       92 65 63       83 73 98       91 98 92       89 77 58       66 74 67       98 67 58       62 73 70       83 81 63       92 88 58       91 71 77       94 75        85 98        77 84        61          59         67