4.Peter Ittig's department store, Ittig Brothers, is Amherst's largest independent clothier. The store receives an average of 8 returns per day. a) (2 pts] The type of control chart that is best to monitor this process is b) [4 Rts] The upper and lower control limits of the c-charts are: UCLC = returns/day (round your response to two decimal places). LCLC= returns/day (round your response to two decimal places and if your answer is negative, enter this value as 0). c) (2 pts] If on a day 9 returns are received, based on the limits, an action is i. Required ii. Not required 5. An ad agency tracks the complaints, by week received, about the billboards in its city: 1 Wee No. of Complaints I 1 4 2 5 5 3 4 14 5 3 6 5 a) 12 Rts] The type of control chart that is best to monitor this process is b) [4 Rts] The lower and upper control limits of the c-chart for this process are (assume that the historical complaints rate is unknown): UCLC= complaints per week (round your response to two decimal places). LCLC = complaints per week (round your response to two decimal places and if your answer is negative, enter this value as 0.1 c) (2 pts) According to the control limits, the process has been 11 11 i. Out of control il. In controls