QUESTION 18 Match the question with the appropriate answer. - |For any normal random variable X, the probability that X is within 1 standard deviation A. 68% of the mean is approximately equal to? B. 99.7% |For any normal random variable X, the probability that X is within 2 standard deviation C. 95% of the mean is approximately equal to? - |For any normal random variable X, the probability that X is within 3 standard deviation of the mean is approximately equal to? QUESTION 19 Suppose that in a US state the health insurance coverage rate (i.e. the fraction of the population with health insurance) is 0.879. Suppose you sample 8 individuals from that state. What is the probability that you get exactly 6 of them have health insurance? Enter your answer using two decimals: so, if the answer is 50%, enter 0.50 QUESTION 20 Which of the following is not a condition that needs to be met for the binomial distribution to be applicable? O the trials must be independent O the number of trials, n, must be fixed O each trial outcome must be classified as a success or a failure O the number of desired successes, k , must be greater than the number of trials O the probability of success, p, must be the same for each trial