Adult entrance fees to amusement parks in the United States are normally distributed with a population standard deviation of 2.5 dollars and an unknown population mean. A random sample of 22 entrance fees at different amusement parks is taken and results in a sample mean of 61 dollars. Use a calculator to find the margin of error for a 99% confidence interval for the population mean. Z0.10 Z0.05 Z0.025 Z0.01 Z0.0051.282 1.645 1.960 2.3626 2.576