Let y denote the number of family generations living in the same household. According to results from the 2018 U.S. General Social Survey (GSS), for a randomly chosen person in the U.S., the probability distribution of y is P(1)=.629, P(2)=.335, P(3)=.023, P(4)=.013.

Find the probability that an American lives in a household consisting of 2 generations.

Find the probability that an American lives in a household consisting of 3 or 4 generations.

Find the mean of this probability distribution. (Note: If, given the type of variable, this measure of central tendency is not appropriate, simply type 0 in the space provided.)

Find the median of this probability distribution. (Note: If, given the type of variable, this measure of central tendency is not appropriate, simply type 0 in the space provided.)

Find the mode of this probability distribution. (Note: If, given the type of variable, this measure of central tendency is not appropriate, simply type 0 in the space provided.)

Find the standard deviation of this probability distribution. (Note: If, given the type of variable, this measure of dispersion is not appropriate, simply type 0 in the space provided.)