Instructions: Show complete works when answering all problems- don't just show final results. Otherwise, it will not be graded. Please do it by hand, but make it clear, neat and professional. Scan or take picture of your answer and upload it onto D2L dropbox before deadline. 1. BOD mini refrigerators are subjected to a temperature testing before they are sold to customers. Results from the last samples are shown in the table. Calculate and draw the necessary control chart(s) and determine whether the process is under control or not. If not, determine what the problem and what needs to be done. Sample # 1 Unit 2 Unit 4 30.8 31.3 w NP Unit 1 31.1 30.6 30.3 34.2 Unit 3 33.5 30.8 32.2 33.6 30.7 30.7 33.5 31 33.1 Unit 5 30 32.6 31.9 32.4 3 4 33.7