Calculate the mean, the variance, and the standard deviation of the following discrete probability distribution. (negative values should be indicated by a minus sign. round intermediate calculations to at least 4 decimal places. round your final answers to 2 decimal places.)
x −28 −24 −9 −4
p(x = x) 0.42 0.30 0.20 0.08

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4