PLEASE ANSWER ONLY PART B, STEP BY STEP PLEASE

The number and frequency of a certain ocean's hurricanes annually from 1940 through 2015 is shown below. This means, for instance, that no hurricanes occurred during 5 of these years, only one hurricane occurred in 13 of these years, and so on. Complete parts a through c below. Number 0 1 2 3 4 5 6 7 8 9 12 Frequency 5 13 2013 3 6 3 2 1 5 4 .. a. Find the probabilities of 0-12 hurricanes each season using these data. Number 0 1 2 3 4 5 6 7 8 9 12 Frequency 5 13 20 13 3 6 5 4 3 2 1 Probability 0.067 0.173 0.267 0.173 0.040 0.080 0.067 0.053 0.040 0.027 0.013 (Type integers or decimals rounded to three decimal places as needed.) b. Find the mean number of hurricanes. mean = (Type an integer or decimal rounded to three decimal places as needed.)