Question

1-Which of the following sets of measures of association represent the values of the alternative hypothesis (HA)? Note that RD is risk difference, RR is risk ratio, and OR is odds ratio.

		RD=0, RR=1, OR=2
		RD=2.0, RR=6.0, OR=6.7
		RD=0, RR=1, OR=1
		None of the above

2-Which of the following statements is true about the confidence interval?

		If you did the study 100 times and got 100 point estimates and 100 confidence intervals, in 95 of the 100 results, the true point estimate would lie within the given interval
		The range within which the true measure of effect lies with a stated probability, or a certain degree of assurance (usually 95%)
		The confidence interval is calculated around the point estimate, and quantifies the variability around the point estimate
		All of the above

3-Which of the following statistical tests is commonly used to test a hypothesis?

		chi-square test
		Student t-test
		Z-test
		All of the above

4-Which of the following will not help to increase study precision (reduce random error)?

		Using an accurate measuring instrument
		Using an efficient study design
		Using a small sample
		Using repeat measures

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Answer 1

Choose the correct options.