MATH 120: Introduction To Statistics Accurate 2023/2024 Lime Spring Week 5 Quiz. Complete Questions And Answers A+ Grade Assured

MATH 120: Introduction To Statistics Accurate 2023/2024 Lime Spring Week 5 Quiz. Complete Questions And Answers A+ Grade Assured 1. Using the test scores in the table below, what is the variance of the scores on the exam? (Round your answer to the nearest whole number.)br / A: 27 2. Using the test scores in the table below, what is the standard deviation of the scores on the exam? (Round your answer to the nearest whole number.) A: 5 3. Assume that 500,000 people take the GED exam (high school proficiency exam) each year and their scores form a normal distribution. If Danny scores two standard deviations below the mean, what percentile is he? A: 2.5th 4. Assume that 500,000 people take the GED exam (high school proficiency exam) each year and their scores form a normal distribution. If Tara scores one standard deviation above the mean, what percentile is she? A: 84th 5. Assume that 20 people take a math test, which is not enough for a normal distribution to form. If Conrad scores three standard deviations above the mean, what percentile is he? A: Not enough information to determine. 6. Assume that 20 people take a math test, which is not enough for a normal distribution to form. If Sarah scores at the median, what percentile is she? A: 50th 7. Assume that 20 people take a math test, which is not enough for a normal distribution to form. If Charlie scores at the mean, what percentile is he? A: Not enough information to determine. 8. Compare the times of the two marathons runners in the table below. Which marathon runner is more likely to win the marathon on any given day?