The number of hospitals in the five largest hospital systems is shown here. 339 72 120 252 153 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 267 hospitals. Part 2 of 3 The mean is 187.2 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.)