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Texas Instruments
9-12
30 Minutes
TI-Nspire™TI-Nspire™ CAS
3.0
Students use the area to the left of a value in a normal distribution to find its percentile and then reverse the process to find the value for a given percentile.
In Problem 1, students find the mean, standard deviation, and normal distribution in order to find the percentile of a given score. They will also use the Normal Cdf command.
Problem 2 asks students to find the score given the percentile. Students reverse the method used in problem 1. This reversal is done by using a command called Inverse Normal.
In problem 3, students find the solutions to each scenario given. These scenarios include finding the higher percentile given two scores from different distributions, estimating a score, and finding a possible score.