shoelaces

If your answer appears to be edited, you will be automatically disqualified. Good luck! @Quatt You are actually incorrect!

...distrubituion with mean of 50cm. if a lace is...? ...greater than 53cm, it is classified as oversized and sold as a 55cm lace smaller than 47cm, it is classified as undersized and sold as a 45cm lace between 47cm and 53cm, it is classed as adequate and sold as a 50cm lace If 90% of the...