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简答题

Question at position 6  Enrique manufactures earrings at his factory in Dublin, OH. He is trying to determine if there is a bottleneck in his welding department that may be slowing down his production of diamond nose rings. To determine if there is a delay Enrique has recorded data from 3 separate days and taken 3 random readings of how long each earring takes (in seconds) to be welded (see table). Calculate the X-bar-bar of the welding process in the earring factory. (round your answer to 2 decimal places) [table] Sample/Day | Day 1 | Day 2 | Day 3 1 | 13.24 | 13.89 | 13.76 2 | 12.56 | 11.98 | 12.34 3 | 15.01 | 14.33 | 12.39 [/table] Answer Enrique manufactures earrings at his factory in Dublin, OH. He is trying to determine if there is a bottleneck in his welding department that may be slowing down his production of diamond nose rings. To determine if there is a delay Enrique has recorded data from 3 separate days and taken 3 random readings of how long each earring takes (in seconds) to be welded (see table). Calculate the X-bar-bar of the welding process in the earring factory. (round your answer to 2 decimal places) [table] Sample/Day | Day 1 | Day 2 | Day 3 1 | 13.24 | 13.89 | 13.76 2 | 12.56 | 11.98 | 12.34 3 | 15.01 | 14.33 | 12.39 [/table] [input]

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思路分析
To tackle this problem, I will first break down the data by day and compute the average welding time for each day, since X-bar-bar is the average of these daily means. Day 1 readings: 13.24, 12.56, 15.01 - Sum = 13.24 + 12.56 + 15.01 = 40.81 - Day 1 mea......Login to view full explanation

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