Suppose that 50 % of americans drink soda every day. amy, a researcher at a local university, takes a random sample of 16 americans. let represent the number of americans in amy's sample who drink soda every day. let and represent the parameters of a normal distribution and let and p represent the parameters of a binomial distribution. the sampling distribution of is : almost binomial with =16 and p=0.5 . exactly normal with =8 and =2.000 . exactly binomial with =16 and p=0.5 . a approximately normal with =0.5 and =0.125 .