How do you estimate a population mean using a sample in statistics?
How do you find a 98% confidence interval?
How do you know if the Central Limit Theorem applies in a statistics problem?
How do you know when you can use a z-test instead of a t-test?
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This is another very good example problem in statistics. It uses a sample to estimate a population to within a confidence interval. Everything is explained clearly, and the problem is solved. It is finished and explained in part 2 of this lesson.