A sugar refiner uses a machine to pack sugar in 5-lb cartons. To check the machine's accuracy, cartons are selected at random and weighed. The results follow:
![2065_5c70aef9-6e57-446d-a5c4-f81934486af5.png](https://secure.tutorsglobe.com/CMSImages/2065_5c70aef9-6e57-446d-a5c4-f81934486af5.png)
a. Describe a random variable X that is associated with these data.
b. Find the probability distribution for the random variable X.
c. Compute the mean and standard deviation of X.