scenario 6-3 in a certain population of students, the number of calculators a student owns is a random variable x described by the following probability distribution: x 0 1 2 p(x) 0.2 0.6 0.2 use scenario 6-3. which of the following is the mean of x? group of answer choices 1 the answer cannot be computed from the information given. 2 0.5 1.2 next