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In the psychology field, when might you want to know the mean differences between two or more groups? Please

describe the situation, including how and why it would be used.

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New Doc 2019-09-23 15.34.12_1.jpg

Ho: M = M 2
1= Mean of group I data
X. = Mean of group 2 data.
*test =
( 71 - x 2 ) - ( M, - M2 )
+
2
where S, = standard deviation of group !
- 2 = standard deviation of group 2
Critical value of...

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