Question: In-class Assignment: Statistical Process Control Part B The Watson Electric Company produces incandescent lightbulbs. The following data on the number of lumens for 40-watt lightbulbs

In-class Assignment: Statistical Process Control Part B The Watson Electric Company produces incandescent lightbulbs. The following data on the number of lumens for 40-watt lightbulbs were collected when the process was in control. Sample Observation 1 2 3 4 604 612 588 600 601 570585 605 614 608 604 1. Calculate control limits for an R-chart. 2. Since these data were collected, some new employees were hired. A new sample ob- tained the following readings: 570, 603, 623, and 583. Is the process still in control

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