an advertisement firm reports that the proportion of consumers who respond favorably to a certain advertisement is 0.70. three simulations, a, b, and c, were designed to create a sampling distribution of a sample proportion from a population with proportion 0.70. each simulation consisted of 2,500 trials. for each trial of a simulation, a sample of size n was selected at random, and the sample proportion was recorded. the value of n varied among the simulations. the following histograms summarize the results of the simulations.
