For poll, 43% of 21,944 people polled answered "yes" to given question. Given that 43% if the best estimate of population percentage, why would we require a confidence interval? That is, what additional information does the confidence interval provide?
a.) information regarding the mean of the sample.
b.) Information regarding the accuracy of the estimate.
c.) Information regarding the standard deviation of the population
d.) information regarding the mean of the population.