Question

In: Statistics and Probability

Which of the following statements are true (T) and which are false (F)? a. In the...

Which of the following statements are true (T) and which are false (F)?

a. In the Fisher’s exact test we test the following hypotheses:
H0: the proportions of type A and type B discordant pairs are the same (p_A=p_B).
H1: the proportions of type A and type B discordant pairs are not the same (p_A≠p_B).

b. Using the McNemar’s test to analyze matched-pair data (paired samples) is a correct decision.

c. The Fisher’s exact test is based on a 2x2 contingency table.

d. A concordant pair in the McNemar’s test is a matched pair in which both members have different outcomes.

Expert Solution

a.

In the Fisher’s exact test we test the following hypotheses:
H0: the proportions of type A and type B discordant pairs are the same.
H1: the proportions of type A and type B discordant pairs are not the same.

Answer: False.

The null hypothesis is Treatments do not affect outcomes-- that the two are independent.

Alt. Hypo. :- Treatments affect outcomes-- that the two are dependent.

b. Using the McNemar’s test to analyze matched-pair data is a correct decision.

Answer: TRUE

It is based on mathced pair data.

c. The Fisher’s exact test is based on a 2x2 contingency table.

Answer: TRUE

d. A concordant pair in the McNemar’s test is a matched pair in which both members have different outcomes.

Answer:- False.

orchestra answered 2 years ago

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