a$)(9$ points$)$ The company has received several internal and external complaints in a $2$ year span.$$ A summary of the comments$/$complaints is available on this worksheet.$$ Analyze the complaint data to identify the "vital few" issues for Boeing: Determine the number of complaints in each category, sort the categories from the most frequent to the least frequent and then compute the percentage of complaints received in each category.$$ What are the "vital few" categories, i$.$e$.,$ which categories constitute the top $80\%$ of all the complaints?$$

b$)(6$ points$)$ Make three recommendations to the company to improve the quality of its products and operations. Make sure your proposal$$ addresses the "vital few" issues you identified in part a$.$