Mean variance and standard deviation

*4.1.31 Question Help Complete parts (a) and (b) using the probability distribution below. The number of overtime hours worked in one week per employee Overtime hours C 2 3 4 5 6 Probability 0.031 0 056 0.138 0.292 0.210 0.179 0.094 (a) Find the mean, variance, and standard deviation of the probability distribution. Find the mean of the probability distribution H = 3.5 (Round to one decimal place as needed.) Find the variance of the probability distribution > (Round to one decimal place as needed.)