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Suppose that you have a sample of data consisting of n=135 observations. Further, suppose that you have two variables in the dataset, X and Y. In addition, the sample standard deviation of X is 125,36, sample covariance between X and Y is 23,278.10 and the sample correlation coefficient between X and Yis.95. Knowing this, what is the sample standard deviation of Y be? O 195.46 O 189.36 145.25 O None of the above O Not enough information to tell Suppose in a class of 100 students who took an exam scored out of 100, the 68th percentile of the exam scores was 72. Thus, % of the students who took the exam scored less than a 72. O 68 O 32 72 O 28 Question 17 A local casino just introduced a new slot machine called Machine - G. The possible payouts as well as the probability of each payout are given below. For example, one play of the the game G will result a payout of 2 with probability.02. Likewise, the game will payout 1 with probability.03. As shown below, we are using the letter G to represent the payout of the game as a discrete random variable. P(G=g) thus represents the PDF for G. G 0.2 1 2 5 8 P(G=g) 0.02 0.03 0.04 0.12 0.03 0.04 0.07 0.1 0.2 0.1 0.05 0.2 9 54 56 68 85 89 Compute P(G>90). Round your answer to two decimals and report your answer in the numerical box below. Do not report your answer as a percent. For example, if the probability = .02 simply enter.02 - and Suppose that sales revenues ("Sales") at a local restaurant are known to follow a normal distribution with a mean of 20 and a variance of 4. True or False: P(Sales