The population standard deviation for the heights of dogs, in inches, in a city is 3.1 inches. If we want to be 92% confident that the sample mean is within 1 inch of the true population mean, what is the minimum sample size that can be taken? z0.10 z0.05 z0.04 z0.025 z0.01 z0.005 1.282 1.645 1.751 1.960 2.326 2.576