How does the percentage captured by the true mean change?

Open the confidence. jsl script, and explore what happens to the width of confidence intervals as the sample size and confidence level are changed. (a) Use different values for the sample size (that is, 5, 10, 50, and 100). What happens to the widths of the confidence intervals as the sample size changes? (b) Change […]

Construct a 95% confidence interval for the mean calculus score.

The sample data table Scores.jmp contains data for the United States from the Third International Mathematics and Science Study, conducted in 1995. The variables came from testing more than 5000 students for their abilities in Calculus and Physics, and are separated into four regions of the United States. Note that some students took the Calculus […]