$3.(15$ points$)$ According to a recent poll of $519$ adult passengers who flew in

$2022$ found the following number and types of complaints about flying.

Responses Number

Cramped seats $45$

Cost $16$

Dislike or fear of flying $57$

Security measures $119$

Poor service $12$

Connecting flight problems $8$

Overcrowded planes $42$

Late flights$/$waiting $57$

Food $7$

Lost luggage $7$

Other $51$

Total $421$

a$.$ Use Excel to generate a Pareto chart summarizing these responses.

What does the Paret chart tell us about the types of complaints by

passengers?

b$.$ What percentage of passengers found nothing to complaint?