A car shop records the number of cars serviced by a mechanic each day over a period of a few weeks. The mean number of cars serviced is 13 , and the standard deviation is 2 . If only 6 cars were serviced on a particularly slow day, which of the following statements is true? Select the correct answer below: The number of cars serviced on the slow day is 1 standard deviation to the right of the mean. The number of cars serviced on the slow day is within 4 standard deviations to the left of the mean. The number of cars serviced on the slow day is 3 standard deviations to the right of the mean. The number of cars serviced on the slow day is 2 standard deviations to the left of the mean