2. In an experiment of colour preference, a child is asked to select three balls, one at a time from a bin full of red, and blue balls. Count the number of red balls selected. (For questions c and d express your answer correct to two decimal places) a) State the random variable and create the sample space [1 mark] b) Create a table showing the probability distribution for the number of blue balls selected. [2 marks] c) Find the mean for this distribution. [2 marks] d) Find the standard deviation for this distribution. [2 marks]