1. A fair coin is flipped 10 times. If we want to calculate the probability of obtaining 3 heads, what is the best distribution to use? A. Binomial distribution B. Poisson distribution C. Bernoulli distribution D. Normal distribution 2. Assume X belongs to a normal distribution: X~N(0,1). What is the 50th percentile of X? A. 0 B. 1 C. 0.5 D. 0.05 3. In this simple system in series shown below, the system functions if all its components function. Assuming that all components are independent, what is P(sys. Functions)? A A. P(AUBUC) B. P(A) x P(B) x P(C) C. P(A) + P(B) + P(C) D. 1 - P(AUBUC) 4. Assume X belongs to a Poisson distribution: X-Poisson (10). What is the probability of X = 15? A. 0.049 B. 0.035 C. 0.118 D. 0.951