Approximately 10% of all people are left-handed ("11 little-known facts," 2013). Consider a grouping of fifteen people. a.) State the random variable. X = b.) Show that this is a binomial. Find the probability that c.) None are left-handed. d.) Seven are left-handed. e.) At least two are left-handed. f.) At most three are left-handed. g.) At least seven are left-handed. h.) Find the mean of X. i.) Find the variance of X. j.) Find the Standard deviation of X.