When a researcher moves from a 95% confidence level to a 99% confidence level, the confidence interval for the mean becomes ______.

a. wider
b. normally distributed
c. statistically significant
d. narrower


a. wider

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Reflective teaching is encouraged as a way of helping teachers

A. maintain open communication with parents and colleagues. B. achieve adequate yearly progress. C. become highly qualified. D. avoid complacency and stagnation.

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What term is used when a subject becomes unavailable during the course of a study?

A. treatment drift B. cancellation C. attenuation D. attrition

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Errorless learning is a teaching method designed to:

a. eliminate errors in the acquisition stages of learning b. promote accurate responding c. eliminate bad habits in performance of a task d. all of the above

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For the one-way within-subjects ANOVA, the more ______ participant responding between groups, the less powerful the test will be at detecting an effect.

A. consistent B. inconsistent C. efficient D. inefficient

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