Question 15 3 pts In a random experiment, a fair die is rolled until a 6 is observed. If the random variable Y counts the number of rolls, then . What is the probability of at least 2 rolls are needed v [ Select ] 0.833 . What is the expected number of rolls, that is E(Y)? 0.667 0.333 . What is the standard deviation of Y? [ Select ] 0.167Question 15 3 pts In a random experiment, a fair die is rolled until a 6 is observed. If the random variable Y counts the number of rolls, then a What is the probability of at least 2 rolls are needed? [SEIEC'E] - What is the expected number of rolls, that is E(Y) V' [59'9\"] - What is the standard deviation of Y? [59'9\"] Question 15 3 pts In a random experiment, a fair die is rolled until a 6 is observed. If the random variable Y counts the number of rolls, then a What is the probability of at least 2 rolls are needed? [59'9\"] - What is the expected number of rolls, that is E(Yl? [59'9\"] - What is the standard deviation on V [33'9\"]