MATH 120: Introduction to Statistics .Spring. LATEST 2022/2023 Week 5 QUIZ WITH ACCURATE ANSWERS. VERIFIED. GRADED A+

MATH 120: Introduction to Statistics .Spring . LATEST 2022/2023 Week 5 QUIZ WITH ACCURATE ANSWERS. VERIFIED . GRADED A+ 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?