Suppose That a Quiz Consists of 20 True-False Questions $\sqrt{5}$

Multiple Choice

Suppose that a quiz consists of 20 True-False questions. A student hasn't studied for the exam and will just randomly guesses at all answers (with True and False equally likely) . How would you find the probability that the will student get 8 or fewer answers correct?

A) Find the probability that X = 8 in a binomial distribution with n = 20 and p = 0.5.
B) Find the area between 0 and 8 in a uniform distribution that goes from 0 to 20.
C) Find the probability that X = 8 for a normal distribution with mean of 10 and standard deviation of $\sqrt{5}$ .
D) Find the cumulative probability for 8 in a binomial distribution with n = 20 and p = 0.5.