Final answer:
The distribution for the proportion of adults in the sample who never wear a helmet when riding a bike can be described by the formula pAN(0.53, 0.0372).
Step-by-step explanation:
The distribution for the proportion of adults in the sample who never wear a helmet when riding a bike can be described by the formula pAN(0.53, 0.0372) as stated in option A.
To explain further, pAN stands for the proportion approximate normal distribution. The first parameter represents the mean, which is 0.53 (53%). The second parameter represents the standard deviation, which is 0.0372 (3.72%). Therefore, the correct answer is A. pAN(0.53, 0.0372).