When we do not have access to the population standard deviation, we use ______ t

Question

When we do not have access to the population standard deviation, we use ______ to estimate the difference to expect between the mean of any given sample (of a specific size) and the population mean by chance (even when the null hypothesis is true). A _______ would be used if the researcher's hypothesis states that their sample mean will be significant smaller than the population mean. _______ results in a research study suggest that observed results in a sample are not likely due to chance and similar results would also be observed in the population.

Explanation / Answer

Answer:

6).

K : Standard error   ( standard deviation of sample means)

I: Significant results

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