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First Question: A survey indicates the mean age of a sample from an audience is 52.4 years with a margin or error of 1.25 years
First Question: A survey indicates the mean age of a sample from an audience is 52.4 years with a margin or error of 1.25 years with a 95% confidence level. Which of the following best describes the results? A) With 95% confidence, the calculated mean has an error of 1.25 years. B) A total of 1.25 years makes up 95% of the mean. C) A total of 95% of the people in the audience are 52.4 years old. D) With 95% confidence, the true mean for the population is within 1.25 years above or below the mean of the sample, 52.4 years. Second Question: Tony is using a six-sided die to simulate the probability of winning a race against five other runners. Which simulation would provide the most accurate results? A) A simulation of 100 trials where if he rolls a 1, he wins, and if rolls a 2, 3, 4, 5 , or 6 he loses. B) A simulation of 500 trials here if he rolls a 1, he wins, and if he rolls a 2,3, 4, 5, or 6, he loses. C) A simulation of 500 trials where if he rolls an even number, he wins, and if he rolls an odd number, he loses. D) A simulation of 100 trials where if he rolls an even number, he wins, and if he rolls an odd number, he loses
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