State park officials were interested in the proportion of campers who consider the campsite spacing adequate in a particular campground. They decided to take a simple random sample of n = 30 from the first N = 300 camping parties that visited the campground. Let y_i = 0 if the head of the ith party sampled does not think the campsite spacing is adequate and  y_i = 1  if he does (i = 1, 2, . . . , 30). Use the data in the accompanying table to estimate p, the proportion of campers who consider the campsite spacing adequate. Place a bound on the error of estimation.

  

      

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Camper sampled Response, y; 1 1 29 1 30 1 30 Zyi = 25 123 Camper sampled Response, y; 1 1 29 1 30 1 30 Zyi = 25 123