To study the effectiveness of a certain adult reading program, researchers will select a random sample of adults who are eligible for the program. The selected adults will be given a pretest before beginning the program and a posttest after completing the program. The difference in the number of correct answers on the pretest and the number of correct answers on the posttest will be recorded for each adult in the sample. Which of the following is the most appropriate inference procedure for the researchers to use to analyze the results? A one-sample zz-interval for a population proportion A A one-sample tt-interval for a sample mean difference B A matched-pairs tt-interval for a population mean difference C A matched-pairs tt-interval for a sample mean difference D A two-sample tt-interval for a difference between means E
To study the effectiveness of a certain adult reading program, researchers will select a random sample of adults who are eligible for the program. The selected adults will be given a pretest before beginning the program and a posttest after completing the program. The difference in the number of correct answers on the pretest and the number of correct answers on the posttest will be recorded for each adult in the sample.
Which of the following is the most appropriate inference procedure for the researchers to use to analyze the results?
-
A one-sample zz-interval for a population proportion
A -
A one-sample tt-interval for a sample mean difference
B -
A matched-pairs tt-interval for a population mean difference
C -
A matched-pairs tt-interval for a sample mean difference
D -
A two-sample tt-interval for a difference between means
E
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