Question 1 (Mandatory)(5 points)

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Which of the following statements is a characteristic of the t-distribution?

Question 1 options:

	It is a sampling distribution.
	It uses degrees of freedom based on sample size.
	Its interpretation is similar to that for z-scores.
	All of the above
	None of the above

Question 2 (Mandatory)(5 points)

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The standard error of the mean is:

Question 2 options:

	The standard deviation for mean estimates.
	Is equal to the standard deviation of the population.
	Sometimes less than 0.
	Is the variance squared.
	None of the above

Question 3 (Mandatory)(5 points)

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A one-tailed test:

Question 3 options:

	Is a directional hypothesis test.
	Splits the rejection region between the tails.
	Has the p-value always less than the significance level.
	Has the p-value always more than the significance level.
	None of the above.

Question 4 (Mandatory)(5 points)

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When the null hypothesis is not rejected, we conclude that:

Question 4 options:

	The research hypothesis is also true.
	The research hypothesis is accepted.
	We used the wrong test statistic.
	All of the above.
	None of the above.

Question 5 (Mandatory)(5 points)

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A two-tailed hypothesis test...

Question 5 options:

	has all of the rejection region in the upper tail of the standard normal distribution.
	has all of the rejection region in the lower tail of the standard normal distribution.
	is a non-directional hypothesis test.
	always uses a z-value of -1.96 or 1.96.
	None of the above