a$)$ What is Quality Circle? How does it differ from steering committee?

b$)$ Clear water is packed in $150$ml packs specified to be N $(150,1\mathrm{.}1).$Construct a $95\%$ Quality Control Chart for the packing process.

c$)$ If you buy a carton with $144$ packs, how many will be expected to contain more than $153$ml of water?