The number of hospitals in the five largest hospital systems is shown here. 342 80 122 255 157 Find the range, mean, and standard deviation. Round the mean to one decimal place and the standard deviation to two decimal places, if necessary. Part 1 of 3 The range is 262 hospitals. Part 2 of 3 The mean is 191.2 hospitals. (Round the answer to one decimal place, if necessary.) Part: 2 / 3 Part 3 of 3 The standard deviation is hospitals. (Round the answer to two decimal places, if necessary.)