fast please Questions 1,2 3 refer to the following The statistics exam score has an average of 70 with a standard deviation of 8 points. We draw a random sample of 16 exams. Let  the random variable representing the  mean (average) score of the 16 exams. 1.   What is the distribution of the meanX-bar? Group of answer choices N(70, 8) N(70, 2) U(1, 16) Not enough information   2.   Find the probability that the mean score  is between 68 and 79.   Group of answer choices 0.4684 0.5316 0.1587 0.8413   Find the 80th percentile for the mean score Xbar Group of answer choices 76.73 71.68 68.32 63.27

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