Your teacher asks you to do the following Statistical Test of Significance, it is a One Tailed Z-Test for Means:
You pull out your Ti-Nspire CX and open Statistics Made Easy (www.Tinspireapps.com) and do the following:
As you can see, not only can you perform this Z-Test for Means in seconds but you can also alter sample mean , the sample size or the standard deviation to view how they affect the z-score and therefore the p-value. This is true power in your hands.
Not only does the app perform Statistical Test but it contains 2 years of College Statistics such as Regressions, Confidence Intervals, Probabilities, 1 and 2 variable Analysis, Non-Parametric Tests, Markov Chains, Moment-Generating Functions, Decision Analysis and more .. You will find the app useful for your entire High School and College career.