help please Q2

2.) Groups of people aged 15-67 are randomly selected and arranged in groups of six. The random variable x is the number in the group who say that their family and/or partner contribute most to their happiness. X P(x) 0 0 1 003 2 025 3 .111 4 5 .373 6 .208 a.) Find the missing value in the chart to complete the Discrete Probability Distribution. b.) Find the Probability that at least two contribute to the happiness. c.) Determine the mean of the probability distribution d.) Find the variance e.) Find the standard deviation