The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. A 99% confidence interval that results from examining 605 customers in Taco Bell's drive-through has a lower bound of 160.9 seconds and an upper bound of 16513 seconds. Complete parts (a) through (c). (a) What is the mean service time from the 605 customers? The mean service time from the 605 customers is 163.1 seconds (Type an integer or a decimal. Do not round.) (b) What is the margin of error for the confidence interval? The margin of error is |seconds. (Type an integer or a decimal. Do not round.)