A tried-and-true revenue stream for large cities has been the funds collected from parking meters. A random sample of 75 parking meters yielded a sample mean of $120 per meter with a sample standard deviation of $30. a) find the 95% confidence interval for the population mean yield dollar amount per parking meter, and state your conclusion. b) find the 98% confidence interval for the population mean yield dollar amount per parking meter, and state your conclusion.