A recent Gallup poll of 519 adults who flew in the past year found the following number of complaints about flying:

Crowded seats (45), cost (16), dislike or fear of flying (57), safety measures (119), poor service (12), connecting flight problems (8), overcrowded planes (42), delayed planes /waiting (57), food (7), lost luggage (7) and others (51).

Required:

What percentage of respondents found nothing they disliked?

Draw a Pareto diagram that summarizes these answers. Also include the 'no complaints' group. 

Use the “4 Ms method” to create a fishbone diagram for the 10 specific categories of dislikes (exclude 'other' and 'no complaints').

If you were managing an airline, what two or three specific problems would you address to improve customer service? Because?