QUESTION 11 Consider a random variable with a binomial distribution, with 18 trials and probability of success equals to 0.76. The standard deviation of this random variable is equal to: Use one two decimals in your answer) QUESTION 12 X is a normal random variable with mean equal to 10 and standard deviation equal to 7. Suppose we observe a value of X equal to 10. What is the Z-score of this observation? (Enter two decimals for your answer) QUESTION 13 Suppose Xis a Bernoulli random variable with probability of success p equal to 0.2. Then the standard deviation of X is: (use two decimals in your answer) QUESTION 14 Suppose Xis a Bernoulli random variable with probability of success p equal to 0.01. Then the expected value of X is: (use two decimals in your answer) QUESTION 15 Consider a random variable with a binomial distribution, with 10 trials and probability of success equals to 0.45. The probability of 4 successes in 10 trials is equal to: (Use three decimals in your answer) QUESTION 16 Suppose that Z is a random variable that has a standard normal distribution. What is the probability that Z takes a value above 0.45? O 0.6736 O 0.5532 O 0.3264 O 0.9543 QUESTION 17 Consider a random variable with a binomial distribution, with 10 trials and probability of success equals to 0.33. The probability of 2 successes, or fewer, in 10 trials is equal to: (Use three decimals in your answer)