An industrial psychologist administered a personality inventory test for passiveaggressive traits to 150 employees. Each individual was given a score from 1 to 5, where 1 is extremely passive and 5 is extremely aggressive. A score of 3 indicated neither trait. Suppose that the probability distribution of is as follows. Determine whether or not the table satisfies a probability distribution. If yes, find the mean (Expected value), standard deviation and variance for the probability distribution table.