A research is preparing a grant that will focus on comparing mothers history of
ID: 3133473 • Letter: A
Question
A research is preparing a grant that will focus on comparing mothers history of drug abuse( history vs no history) and infant birth weight. The grant proposal requires a sample size calculation for testing the difference between the two groups. In order to calculate the sample size, the researcher needs which of the following items?
a) Power, typer 1 error rate, and effect size
b) Confidence interval and power
c) Typer 2 error rate, power and effect size
d) Type 1 error rate, Type 2 error rate and power
Explanation / Answer
To determine the sample size, we need the three variables in
OPTION A: a) Power, typer 1 error rate, and effect size [ANSWER]
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