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1. What is the sampling distribution model for a difference between proportions? (i.e., what is the mean and standard deviation of this distribution?) Use both

1. What is the sampling distribution model for a difference between proportions? (i.e., what is the mean and standard deviation of this distribution?) Use both words and formulas.

Explain/define the following assumptions and conditions for comparing proportions:

Independence Assumption:

Randomization Condition:

Independent Groups Assumption:

Success/Failure Condition:

4. What is a two-proportion z-test? Explain in words and symbols.

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