The weight (gms) of 31 books picked from a consignment are as follows : 106, 107, 76, 82, 106, 107, 175, 93, 187, 95, 123, 125, 111, 92, 86, 70, 127, 68, 130, 129, 139, 119,115, 128, 100, 186, 84,99, 113, 204, 111 Test whether this sample may be treated as random.