We 3.21. Use pattern tests to determine if the sample observations used in the x-chart in Problem 3-19(e) reflect any nonrandom patterns. 2 un sempre observations used in the x-chart in Problem 3.17(b) reflect any nonrandom patterns. 3.19. The City Square Grocery and Meat Market has a large meat locker in which a constant temperature of approximately 40" should be maintained. The market manager has decided to construct an R-chart to monitor the temperature inside the locker. The manager had one of the market employees take sample temperature readings randomly five times each day for 20 days in order to gather data for the control chart. Following are the temperature sample observations Samples Temperature ("F) 1 46.3 48.1 42.5 43.1 39.6 41.2 40.5 37.8 36.5 42.3 3 40.1 413 345 33.2 36.7 4 42.3 44.1 39-5 377 38.6 5 352 38.1 40.5 39.1 423 6 40.6 41.7 38.6 43-5 44.6 7 33.2 38.6 41.5 407 43.1 8 41.8 40.0 41.6 40.7 39-3 9 42.4 41.6 40.8 40.9 423 10 44.7 36.5 373 35-3.41.1 11 426 435 35-4 36.1 38.2 12 40.5 40.4 39.1 37.2 41.6 13 45-3 42.0 431 44.7 39-5 14 36.4 37.5 36.2 38.9.40.1 15 40.5 34-3 36.2 35.1 36.8 16 39.5 38.2 37.6 34.1 38.7 17 37.6 40.6 40-3 39.7 41.2 18 41.0 34-3 39.1 452 43-7 19 40.9 42.3 37.6 35.4 348 20 37.6 39.2 39-3 41.2 37.6