Suppose the weights, in pounds, of the dogs in a city are normally distributed. If the population standard deviation is 3 pounds, what minimum sample size is needed to be 95% confident that the sample mean is within 1 pound of the true population mean?z0.10z0.05z0.025z0.01z0.0051.2821.6451.9602.3262.576Use the table above for the z-score, and be sure to round up to the nearest integer.