1. Weights of containers filled with a powdered dietary supplement made by WeightBgone were measured by taking samples for 30 days consisting of 4 containers, each. The data found in the worksheet CaseDatax/sx were gathered by a quality analyst. The containers were designed to be filled with 400 20 grams. Construct a histogram of the data. What can you observe about the shape of the distribution? What would you recommend to the production manager based on your analysis? Construct a control chart for the data. What additional information does it provide?
2. Jack Frost has used his belt-driven, hand-guided snowblower to clear his driveway for several winters. Due to a knee replacement, he can't do the work this winter. He wants to make a flowchart to assist his 15-year old son in knowing what steps to follow when he takes over the job. Assume that the blower is stored in the garage. Some of the steps would include getting it out of the garage, blowing the snow off the driveway, and putting it back in the garage. Are there other steps that should be included, in order to have a more complete flowchart? Construct the process map flowchart, using Excel, or other appropriate software having drawing tools.
3. A kiln at Suither Pottery was thought to be unstable, due to the number of defective items that were being experienced. To test this theory, the temperature was measured every hour over a 36 hour cycle. The temperature range was required to be 1180 20 deg. C. The results can be found in the worksheet Case2Data.x/sx. Construct a scatter diagram for these data. What conclusions can you reach?