NO!! This is known to be false. The average does not mean "most" measurements match the... mean. And it actually does happen that the normal distribution is often (wrongly) interpreted as defining some kind of standard specimen that does not, in fact, exist.
There's a famous story about that exact topic, relating to US pilot seats. Excerpts from an article about it:
> Using the size data he had gathered from 4,063 pilots, Daniels calculated the average of the 10 physical dimensions believed to be most relevant for design, including height, chest circumference and sleeve length. These formed the dimensions of the “average pilot,” which Daniels generously defined as someone whose measurements were within the middle 30 per cent of the range of values for each dimension. So, for example, even though the precise average height from the data was five foot nine, he defined the height of the “average pilot” as ranging from five-seven to five-11. Next, Daniels compared each individual pilot, one by one, to the average pilot.
> Before he crunched his numbers, the consensus among his fellow air force researchers was that the vast majority of pilots would be within the average range on most dimensions. After all, these pilots had already been pre-selected because they appeared to be average sized. (If you were, say, six foot seven, you would never have been recruited in the first place.) The scientists also expected that a sizable number of pilots would be within the average range on all 10 dimensions. But even Daniels was stunned when he tabulated the actual number.
> Zero.
> Out of 4,063 pilots, not a single airman fit within the average range on all 10 dimensions.
https://www.thestar.com/news/insight/2016/01/16/when-us-air-...