In this lesson, Professor Betis explains how to use the Z test for the mean in statistics. He walks through a problem where a researcher reports that the average time it takes a student to drive to their community college campus is less than 24 minutes. Using a left-tailed test and a significance level of alpha equals 0.01, they calculate the critical value, test value, and ultimately make a decision to reject the null hypothesis and support the claim. The lesson concludes with a summary of the results and a reminder to seek help if needed.
Using the Z test in Statistics.
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