Cholesterol levels (mg/dL) were collected from a random sample of patients two days after they had a heart attack. Click on the Data button shown below to display the data. Data Cholesterol Level 226 294 242 318 360 142 280 224 272 276 266 270 278 244 236 220 234 210 160 186 (a) Find the range. Put the answer in the first box and the correct units in the second box. Range = (b) Find and interpret the (sample) standard deviation. Put the answer in the first box, rounded to 2 decimal places, and the correct units in the second box. Standard deviation = Interpret: The average cholesterol level of patients two days after they had a heart attack. The difference between the largest and the smallest cholesterol level of patients two days after they had a heart attack. The average spread of the cholesterol level of patients two days after they had a heart attack from the median. The average spread of the cholesterol level of patients two days after they had a heart attack from the mean