Calcium levels in people are normally distributed with a mean of 9.4 mg/dL and a standard deviation of .3 mg/dL. Individuals with calcium levels in the bottom 15% of the population are considered to have low calcium levels. Find the calcium level that is the borderline between low calcium levels and those not considered low. Car
Week 2 Problem Sets
2. a 9
6. When we generate a large volume of data, we are unlikely to be able to make sense of it by looking at all the data. The largest amount o
1) Can you kindly explain what the confidence % truly means at the bottom of the descriptive statistics relative to the data?
2) How would I determine if the accuracy of the data would improve if there were more data points? In other words, can the number of data points somehow determine the confidence interval for the data??
Jon Molnar will graduate from Carolina Forest High School this year. He took the American College Test (ACT) for college admission and received a score of 30. The high school principal informed him that only 2 percent of the students taking the exam received a high score. The mean score for all students taking the exam is 18.
Please help with the following problem.
A newspaper article reported that people spend a mean of 6 hours per day watching TV, with a standard deviation of 1.9 hours. A psychologist would like to conduct interviews with the 15% of the population who spend the most time watching TV. She assumes that the daily time people spe