(a) What two sampling distributions are used in estimation and hypothesis testing of population means, proportions, paired differences, differences of means, and differences of propartions? (Select...

Extracted text: (a) What two sampling distributions are used in estimation and hypothesis testing of population means, proportions, paired differences, differences of means, and differences of propartions? (Select all that apply.) the Student's t distribution the Student's z distribution the standard normal distribution the standard Student's distribution the standard t distribution What are the criteria for determining the appropriate sampling distribution? (Select all that apply.) known or unknown population sizes normality C known or unknown u C known or unknown o known or unknown population proportions


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