A cognitive psychologist is investigating the effects of giving imagery instructions on free recall. Eight subjects...

A cognitive psychologist is investigating the effects of giving imagery instructions on free recall. Eight subjects are given a free recall test with no imagery instructions, and another eight are given the same test after instructions on how to use imagery to link the words together. The number of words recalled for each group are as follows:
No Imagery: 8, 11, 7, 10, 9, 12, 8, 10
Imagery: 14, 15, 9, 16, 9, 13, 7, 12
What is the two-group t value for testing the null hypothesis that the population means for imagery instructions and no imagery instructions are the same?

		.96
		1.93
		2.73
		3.19

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orchestra answered 1 year ago

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