Mathew determines that the “power” for detecting a posttest score of the size Mathew expects with his experiment is .9999.  Explain what the power means in words.     .9999 is the probability that Mathew concludes the mean posttest score is greater than 7 when the actual mean gain score is greater than 7.     .9999 is the probability that Mathew fails to conclude the mean posttest score is greater than 7 when the actual mean gain score is greater than 7.     .9999 is the probability that Mathew concludes the mean posttest score is greater than 7 when the actual mean gain score is not greater than 7.     .9999 is the probability that Mathew fails to conclude the mean posttest score is greater than 7 when the actual mean gain score is not greater than 7.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.