Hello I can't understand these two questions, what should i answer?

-Exercise 1, QUESTION 5 (Why is the empirical rule unfit)

Exercise 1 A sample of clinical psychologists were asked to remember the number of child abuses they ecoun- tered last year in their professional activity. The frequency distribution is reported below: yj nj 9 1. Compute the mean; 2. Compute the standard deviation; 3. Compute the median; 4. Represent the distribution using a box-plot highlighting the presence of outliers (if any); X. Why is the empirical rule unfit to identify outliers in the case of these data?Exercise 4 The probability that a normal random variable takes values in the range 4 - 10 is 0.95. Given that the mean is 7, what is your estimate of the standard deviation? Consider X ~ N(u = 0,0 = 3). 2. Compute the probability P(-1 15)