The random variable x represents the number of cars per household in a town of 1000 households. Find the probability of randomly selecting a O A. 0.125 One thousand tickets are sold at $2 each. One ticket will be randomly selected and the winner will receive a color television valued at $398. What is household that has less than two cars. O B. 0.809 the expected value for a person that buys one ticket? Round the answer to the nearest cent. Cars Households O C. 0.553 125 O D. 0.428 428 O A. $1.00 256 O B. $1.60 N 108 O C. - $1.00 A 83 O D. - $1.60 5. The random variable x represents the number of boys in a family of three children. Assuming that boys and girls are equally likely, find the mean and standard deviation for the random variable x. X P(x) 0.125 0.375 0.375 0.125 O A. mean: 1.50; standard deviation: 0.87 O B. mean: 2.25; standard deviation: 0.87 O C. mean: 2.25; standard deviation: 0.76 O D. mean: 1.50; standard deviation: 0.76