Sampling a population is often necessary because the cost of studying all the items in the population is prohibitive.
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Q5: When doing research,knowing the population mean and
Q6: It is often not feasible to study
Q7: If the size of a sample equals
Q8: If 40 samples of size 21 were
Q9: Based on the central limit theorem,the sample
Q11: The items or individuals of the population
Q12: In the sampling distribution of the sample
Q13: In cluster sampling,a population is divided into
Q14: We can expect some difference between sample
Q15: The standard error of the mean is
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