Which of the following guidelines is accepted as the strongest demonstration of experimental effectiveness in single-system designs?
a. All measurements during treatment are higher or lower than anymeasurement taken during the baseline
b. The correlation between baseline measurements and treatmentmeasurements is at least .80.
c. All measurements in the treatment phase are higher or lower than theaverage level of the baseline.
d. Baseline measurements and treatment measurements are uncorrelated.
a
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If our findings yield a probability level that falls short of our critical region and therefore is NOT statistically significant, we should:
a. Conclude that the null hypothesis has been confirmed. b. Fail to reject the null hypothesis. c. Conclude that there really is no relationship between our hypothesized variables in the population. d. All of these.
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Indicate whether the statement is true or false.