A researcher wants to carry out a hypothesis test involving the mean for a sample of size n = 15 . He does not know the true value of the population standard deviation, but is reasonably sure that the underlying population is approximately normally distributed. Should he use a z-test or a t-test in carrying out the analysis? Why?
t-test; He should use a t-test to carry out the analysis since the population standard deviation is unknown, but he is reasonably sure the population is approximately normally distributed.
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Answer the following statement true (T) or false (F)
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Answer the following statement true (T) or false (F)
Why is it important to have a precise and clear research question?
What will be an ideal response?