In such populations, the mean of persons carrying the genetic mutation is 90.
Given,
The proportion of the population that is genetically altered is 9%.
9 ÷ 100 = 0.09
1000 persons were chosen at random.
The number of persons who must be obtained is 1000.
According to the question, around 9% of the general population is affected by a genetic mutation. So, if a random sample of 1000 persons is taken, about% of those 1000 will have that mutation.
As a consequence, the mean for all of these randomly chosen groups is 0.09 × 1000=90.
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