PLEASE ANSWER ALL PARTS

Question 7 (1 point) As a quality control inspector of a packaging company, you want to control the weight of a packaging process. At the end of each day during the last three days, you have randomly selected a sample of four packages and weighed each: Day Observation (ounces) Monday 604 612 588 600 Tuesday 597 601 607 603 Wednesday 581 570 585 592 For each sample, what is the sample size? 03 3 04 05 12 Question 8 (3 points) Refer to the information in Q7. What is the average range of all the samples? 24.5 18.67 19.12 Question 9 (5 points) Refer to the information in Q7. Suppose the process standard deviation is not known. Based on the above data (Monday-Wednesday), construct the 3-o control limits for the mean chart. UCL=630.24, LCL=580.12 UCL=608.63, LCL=581.37 UCL=595, LCL-570.2 UCL-630.12, LCL=560.23 Question 10 (5 points) Refer to the information in Q7. Suppose that from past experience you know that whenever this process is under control, package weight is normally distributed with a standard deviation of 22.32 ounces. What are the 3-6 control limits for your mean chart? UCL=628.48, LCL=561.52 OUCL=638.66, LCL 570.23 UCL=650.23, LCL=580.12 UCL=658.12, LCL=560.21