vault backup: 2024-02-01 13:59:19
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## z tests for percentages
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This test can be used if:
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- The data is a simple random sample from the population of interest
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- The sample size is large
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- A qualitative variable of interest summarized by percentages
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- Can use a box with tickets of 1s and zeros to represent the population
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## c tests for averages
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