A presidential candidate fears he has a problem with women voters (meaning that his approval rating among women is lower than his approval rating among men). The candidate has a positive image with 59% of 300 randomly selected men but only with 53% of 600 randomly selected women. A hypothesis test is conducted with alternative hypothesis H_A: p_men > p_women.

(A) Tell the sampling model on which the hypothesis test is based - shape, mean, standard deviation or standard error.

(B) Use the sample data and this sampling model to compute the z-score for p_men p_women.

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