A tube of Listerine Tartar control toothpast contains 4.2 ounces. As people use the toothpaste, the amount remaining in any tube is random. Assume the amount left in the ube follows a uniform distribution.
a. how much toothpaste would you expect to be remaining in the tube
b. what is the std deviation of the amount remaining??
c. what is the likelihood there is less than 3.0 oz remaining?
d. what is the probability there is more than 1.5 oz remaining?