Twenty-five different automobiles were tested in dry conditions at a speed of 65 miles per hour for total stopping distance. The sample results, measured in feet, are given below. 345, 348, 342, 348, 342, 337, 342, 349, 346, 347, 358, 351, 343, 347, 349, 350, 345, 340, 352, 349, 353, 346, 338, 345, 339 (a) Calculate the standard deviation for this data and interpret the result. (b) According to these results, would it be unusual for an automobile traveling at 65 miles per hour in dry conditions to take a total of 358 feet to come to a complete stop