Question

Seven percent of US adults have type O-negative blood.

Answer 1

is there more to it? im confused

Answer 2

Answer: A) Take a random sample of 505050 US adults and let Y=Y=Y, equals the number who don't have type O-negative blood.

AND

C) Take a random sample of 505050 US adults and let X=X=X, equals the number who have type O-negative blood.Each trial has two outcomes (type O or not), results of each trial are independent (sampling less than 10%10%10, percent of population), there is a fixed number of trials (505050), and the probability of success is the same for each trial (7%7%7, percent).

Explanation: