Suppose that 30% of a population carries a certain gene. You want to estimate the probability that it will take at least a sample of four to find a person that carries the gene, how could you simulate a person having or not having the gene?

A) 0, 1, 2 could represent a person that carries the gene, and 3, 4, 5, 6, 7, 8, 9 could represent a person that does not carry the gene.
B) 0, 1, 2, 3 could represent a person that carries the gene, and 4, 5, 6, 7, 8, 9 could represent a person that does not carry the gene.
C) 0, 1, 2 could represent a person that does not carry the gene, and 3, 4, 5, 6, 7, 8, 9 could represent a person that carries the gene.
D) 0, 1, 2, 3 could represent a person that does not carry the gene, and 4, 5, 6, 7, 8, 9 could represent a person that carries the gene.

sure looks like A to me. 3/10 success rate

The correct answer is B) 0, 1, 2, 3 could represent a person that carries the gene, and 4, 5, 6, 7, 8, 9 could represent a person that does not carry the gene.

To simulate a person having or not having the gene, we can assign numbers to represent these two categories. Let's analyze the options provided:

A) 0, 1, 2 could represent a person that carries the gene, and 3, 4, 5, 6, 7, 8, 9 could represent a person that does not carry the gene.

B) 0, 1, 2, 3 could represent a person that carries the gene, and 4, 5, 6, 7, 8, 9 could represent a person that does not carry the gene.

C) 0, 1, 2 could represent a person that does not carry the gene, and 3, 4, 5, 6, 7, 8, 9 could represent a person that carries the gene.

D) 0, 1, 2, 3 could represent a person that does not carry the gene, and 4, 5, 6, 7, 8, 9 could represent a person that carries the gene.

Since the gene is carried by 30% of the population, assigning numbers 0, 1, and 2 to represent a person with the gene seems logical. This reduces options A and C.

Regarding the remaining options, it is more common to assign higher numbers to represent the presence of something rather than its absence. Therefore, it is more appropriate to assign numbers 0, 1, 2, and 3 to represent people without the gene, which leads us to option D.

Therefore, the correct answer is:

D) 0, 1, 2, 3 could represent a person that does not carry the gene, and 4, 5, 6, 7, 8, 9 could represent a person that carries the gene.