Which of the following tactics will reduce the power of a planned study using a t test for independent means?
A) using a less stringent significance level (such as .10 instead of .05 )
B) using more precise measures
C) increasing the size of your samples
D) using unequal sample sizes instead of equal ones (for the same number of participants)
D
Psychology
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A)geography B)specific circumstances C)politics D)our health care system
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At 6 weeks, Jessica's most recent emotional reaction is likely to be
fear of strangers. a wide-eyed look of surprise. a social smile. a squeal of delight at her favorite toy.
Psychology