The city wishes to estimate the average commute distance for all city employees They collect a random sample of 79 employees and find a sample mean of 7 3 miles They also assume a population standard deviation of o 1 8 miles Calculate the z interval to estimate u the average commute distance for all city employees with 95 confidence Round your answers to 2 decimal places Find the Critical Value z Point Estimate Margin of Error Write the interval as lower bound upper bound