SAT scores are normally distributed with a mean of 1,500 and a standard deviation of 300. An administrator at a college is interested in estimating the average SAT score of first-year students. If the administrator would like to limit the margin of error of the 90% confidence interval to 15 points, how many students should the administrator sample? Make sure to give a whole number answer.

A quantitative data set has a size 50. At least how many observations lie within 3standard deviations to either side of the​ mean?

Most medical schools require applicants for admission to take the Medical College Admissions Test (MCAT) examination. Scores on the MCAT are roughly normally distributed with a mean of 500 and a standard deviation of 10.6. What percentage of students score above 518 points? ( write as a decimal and round to the nearest hundredth)

Use the range rule of thumb to identify the values that are significantly low, the values that are signficantly high, and the values that are neither significantly low nor significantly high. A test is used to assess readiness for college. In a recent year, the mean test score was 19.8 and the standard deviation was 5.4, Identify the test scores that are significantly low or significantly high. What test scores are significantly low? Select the correct answer below and fill in the answer box(es) to complete your choice. O A. Test scores that are between (Round to one decimal place as needed. Use ascending order.) and Get more help - Next all 9:26 PM 47°F Clear 3/27/2022 近