The significance level, also known as alpha (α), determines how much evidence we need to reject the null hypothesis. It represents the probability of making a Type I error.
Imagine you are buying a new phone and want to make sure it works properly. The significance level is like your tolerance for defects - if you set it too low, you might end up rejecting phones that are perfectly fine; if you set it too high, you might accept faulty phones.
P-value: The probability of obtaining results as extreme as observed data, assuming the null hypothesis is true.
Confidence Interval: A range of values within which we estimate an unknown population parameter lies with a certain level of confidence.
One-tailed Test: A statistical test where deviations from the expected outcome can only occur in one direction.
AP Statistics - 6.7 Potential Errors When Performing Tests
AP Statistics - 6.10 Setting Up a Test for the Difference of Two Population Proportions
AP Statistics - 6.11 Carrying Out a Test for the Difference of Two Population Proportions
AP Statistics - 7.4 Setting Up a Test for a Population Mean
AP Statistics - 7.5 Carrying Out a Test for a Population Mean
AP Statistics - 7.9 Carrying Out a Test for the Difference of Two Population Means
AP Statistics - 7.10 Skills Focus: Selecting, Implementing, and Communicating Inference Procedures
AP Statistics - 8.3 Carrying Out a Chi Square Goodness of Fit Test
AP Statistics - 9.5 Carrying Out a Test for the Slope of a Regression Model
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