1. (10 pts) There are ten tennis balls in a bag. Four of the balls are orange and six are yellow. You draw a ball, see the color, and put the ball back into the bag. You repeat this action seven times, and is the number of times you draw an orange ball, and is the number of times you draw a yellow ball. (a) Describe the distribution of the random variable . That is, indicate the kind of the distribution (binomial, hypergeometric, geometric, Poisson, etc.) and the associated parameters. (b) Describe the distribution of in a similar way.