A Plan for obtaining a sample from a population is called a:    A. Sampling design  B. Population design  C. Sampling frame  D. Sampling distribution In sampling without replacement, an element can be chosen:    A. Less than once  B. Only once  C. Difficult to tell  D. More than once The standard deviation of any sampling distribution is called a:    A. Type II-error  B. Non-sampling error  C. Standard error  D. Type- I error

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