Determine why individuals need to study

Reference no: EM13112077

It is significant to create the detailed plan of study early in development of an investigation. One part of plan is to assure adequacy of sample size. Consider the test of H0: p1 = p2 with level of significance (alpha) of 0.01 with a power which is equal to 0.90. We forecast that 20% of group 1 and 30% of group 2 will experience outcome. If we recruit the equal number of individuals in each of the groups, how many individuals do we need to study?

Reference no: EM13112077

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