Graziano and Raulin (8th ed)Graziano & Raulin
Research Methods (8th edition)

Answer

 

The mean and standard deviation for Group 1 are 20.0 and 5.01, respectively.

The mean and standard deviation for Group 2 are 21.75 and 4.89, respectively.

The t-value is .707, which is short of statistical significance.

Therefore, the groups do not differ from each other.

 

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