I need help with this question.

2. In an experiment of colour preference, a chitd is asked to select three balls, one at a time from a bin full of red. and blue balls. Count the number bf red balls selected. {For questions c and o express your answer correct to Mo diecr'rrrelI places} a} State the random variable and create the sample space [1 martr] b} Create a table showing the probability distribution for the number of red balls selected. [2 madcs} c} Find the mean for this distribution. [2 marks] d} Find the standard deviation for this distribution. [2 marks]