The trade magazine QSR routinely checks the drive-through service times of fast-food restaurants. A 90% confidence interval that results from examining 590 customers in Taco Bell's drive-through has a lower bound of 171.0 seconds and an upper bound of 174.4 seconds. Complete parts (a) through (c). . . . . . (a) What is the mean service time from the 590 customers? The mean service time from the 590 customers is 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.) (c) Interpret the confidence interval. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals. Do not round.) O A. One can be % confident that the mean drive-through service time of Taco Bell is between seconds and seconds. O B. The mean drive-through service time of Taco Bell is |seconds % of the time. O C. There is a % probability that the mean drive-through service time of Taco Bell is between seconds and seconds. O D. One can be % confident that the mean drive-through service time of Taco Bell is seconds.A simple random sample of size n = 40 is drawn from a population. The sample mean is found to be x = 120.5 and the sample standard deviation is found to be s = 13.2. Construct a 99% confidence interval for the population mean. The lower bound is . (Round to two decimal places as needed.) The upper bound is . (Round to two decimal places as needed.)