Sports shirts are frequently classified as S, M, L, XL for small, medium, large
and extra-large neck sizes. S fits a neck circumference of less than 37cm, M
fits between 37 and 40.5cm and L fits between 40.5cm and 44cm while XL fits
necks over 44cm in circumference. The neck circumference of adult males has
a normal distribution with
1
Expert's answer
2021-08-27T08:32:26-0400
With a standard deviation of 3.5. Therefore, the size step was chosen with just such a result.
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