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Here is a link to a JAVA-run simulation for the Central Limit Theorem for Means. Due to JAVA issues, this simulation may not run on all web browsers. It should run with Firefox.

http://www.stat.tamu.edu/~west/ph/sampledist.html

Source: @itsallmine

Source: Carnegie Foundation Statway Initiative

Use the TI graphing calculator to construct a confidence interval with the Student T-distribution.

Source: @itsallmine

Source: @itsallmine

Twenty-two students were randomly selected from a population of 1000 students. The sampling method was simple random sampling. All of the students were given a standardized English test and a standardized math test. Test results are summarized below. Find the 90% confidence interval for the mean difference between student scores on the math and English tests. Assume that the mean differences are approximately normally distributed.

Source: @itsallmine