The phrase "a normal proportion of" is correct and usable in written English.
It can be used when discussing the expected or typical amount of something in a given context, such as in statistics, health, or resource allocation.
Example: "In a balanced diet, it is important to consume a normal proportion of carbohydrates, proteins, and fats."
Alternatives: "an average amount of" or "a typical share of".
In the 17th century greenhouses were ordinary brick or timber shelters with a normal proportion of window space and some means of heating.
The seasonally adjusted numbers for state and local workers now may be overstated, since they assume a normal proportion of teachers and other school employees are on summer holidays and will return in the fall.
In sharp contrast to the C. tetani, these nine genomes contain a normal proportion of mini-proteins, ranging from 14.25% to 8.27%.
This suggested that after a transient expansion during 4D overexpression, BPs returned to a normal proportion of neurogenic vs. proliferative divisions.
Shh−/− embryos die before birth and have defects in DN thymocyte proliferation and differentiation, but in FTOC they accumulate a normal proportion of DP cells.
The results of this study suggest that a larger proportion of force is transferred through the ulno-carpal joint of the JIA wrist than for healthy subjects, with a less than normal proportion of force transferred through the radio-carpal joint.
A higher than normal proportion of the ANZAC casualties were from the officer ranks.
Something similar lay behind the Japanese move towards heavier guns; at Tsushima, Japanese shells contained a higher than normal proportion of high explosive, and were fused to explode on contact, starting fires rather than piercing armour.
In the 2007 epidemic, a larger than normal proportion of cases were DHF (2,706), more than twice the largest number of such cases reported in previous years.
A further study using flow cytometry to assess DNA content in 15 cases found aneuploidy in one case of SE, and a higher than normal proportion of cells in G2/M phase in two cases 21).
It is worth noting that the generalizability of our population may be restricted because Brigham and Women's Hospital is a major referral center for high-risk pregnancies; thus, our population might have a higher than normal proportion of women with prior conditions that could lead to medically indicated protocol-driven PTB (e.g., placement of abdominal cerclage for cervical insufficiency).
