Katarina tosses a thumbtack on the ground 202020 times to see if it lands on its side or if it lands with the point facing up (there are no other possible outcomes). Let S=S=S, equals the number of times it lands on its side. Is SSS a binomial variable? Why or why not? Choose 1 A
Each trial isn't being classified as a success or failure, so SSS is not a binomial variable.

(Choice B)
B
There is no fixed number of trials, so SSS is not a binomial variable.

(Choice C)
C
The trials are not independent, so SSS is not a binomial variable.

(Choice D)
D
This situation satisfies each of the conditions for a binomial variable, so SSS has a binomial distribution.