Approximately 45% of US adults owned a computer as a child. Suppose a random sample of 54 US adults is taken. a. Define the random variable, X, in words. X = the of US adults who owned a computer as a child b. What values can the random variable take on? Write you answer as number, number, number, ..., number c. Define the random variable X. X ~ ( , ) d. Find the expected number to have owned a computer as a child. Round to two decimals. e. Find the standard deviation. Round to two decimals. f. Find P(X = 30). Round to four decimals. g. Find the probability that more than 32 owned a computer as a child. Round to four decimals.

Ahigh-altitude spherical weather balloon expands as it rises, due to the drop in atmospheric pressure. suppose that the radius r increases at the rate of 0.02 inches per second, and that r = 36 inches at time t = 0. determine the equation that models the volume v of the balloon at time t, and find the volume when t = 360 seconds. v(t) = 4π(0.02t)2; 651.44 in3 v(t) = 4π(36 + 0.02t)2; 1,694,397.14 in3 v(t) = four pi times the product of zero point zero two and t to the third power divided by three.; 4,690.37 in3 v(t) = four pi times the quantity of thirty six plus zero point zero two t to the third power divided by three.; 337,706.83 in3