Determine whether the following value is a discrete random v

Determine whether the following value is a discrete random variable (A), continuous random variable(B) , or not a random variable. (C)

Is the amount of rain in City A during July a discrete random variable (A), continuous random variable(B) , or not a random variable. (C)

Is the Number of free-throw attempts before the first shot is missed a discrete random variable (A), continuous random variable(B) , or not a random variable. (C)

Is the number of textbook authors now eating a meal a discrete random variable (A), continuous random variable(B) , or not a random variable. (C)

Solution

Amount of rain in City A during July is a Continous random variable(B), since the amount of rain can take any values.

Number of freee throw attempts before the first shot is missed.This is clearly not a random variable.

Number of text-book book authors now eating a meal is a dicrete random variable since the number can take only whole numbers and not fractions.