In the following example we note the number of accidents examined in a certain town on any particular day. The chance of zero accidents is three percent. The chance that there will be one to five accidents is normally distributed at eight percent for each occurrence. The probability is eleven percent each for six and seven accidents. The chance of eight accidents is ter percent. The chance of nine accidents is twenty percent. The chance of ten accidents is five percent. ( 12 points) a. What is the expected number of accidents? b. What is the variance? c. What is the standard deviation?