Final answer:
The sample statistic is the proportion of voters in the sample supporting a candidate, which is 50% or 0.50.
Step-by-step explanation:
The student is asking about the sample statistic for the proportion of voters in a county who support a specific candidate. The sample statistic is the proportion of voters in the sample who support the candidate, which in this case is 50% or 0.50. This differs from the true population proportion, which is given as 59% or 0.59. In statistical terms, the sample statistic is represented by p' (read as p prime), which is the observed proportion in the sample. Therefore, the sample statistic for this particular study is p' = 0.50.