6.8 8. An experiment was performed to compare the lumen measurements obtained by four pho- tometry labs. A collection of six lamps was prepared and circulated to each of the labs. Each lab measured each lamp twice and measurements were made in completely random order. Analyze the data and interpret the results. Construct an appropriate error statement. for this data set. A #71522 2409, 2494 #71533 4477, 4182 Lamp #71534 8861, 8739 #71535 10213, 10281 #71536 20601, 22996 #71537 35985, 40224 Lab B 2465, 2693 4485, 4283 9638, 9084 11138, 11560 23797, 23625 42457, 41064 C 2499, 2365 4131, 4076 9272, 8904 10479, 10468 22106, 20773 39140, 37987 D 2556, 2498 4297, 4481 9579, 8479 11151, 11015 20884, 22430 39049, 37204

Fig: 1