Jamison Kovach Supply Company manufactures paper clips and other office products. Although inexpensive, paper clips have provided the firm with a high margin of profitability. Sample size is 200. Results are given for the last 10 samples: SAMPLE 1 2 3 4 5 6 7 8 9 10 DEFECTIVES 5 7 4 4 6 3 5 6 2 8 a) Establish upper and lower control limits for the control chart and graph the data. b) Has the process been in control? c) If the sample size were 100 instead, how would your limits and conclusions change?

Jason is looking for an engagement ring to offer his girlfriend. he has found a similar ring at each of four different jewelry stores. he doesn't have enough money to pay for the ring in cash, so he is planning on opening a line of credit (credit card) at the store he ends up buying the ring from. the chart below outlines the difference in the price of the rings the different stores offer as well as the difference in credit options. jason plans to pay off the ring purchase in 36 months. according to the information in the table, which of the jewelry stores will have the cheapest ring in the end?