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Figure 1 | International Journal of Mental Health Systems

Figure 1

From: Public perception of mental health in Iraq

Figure 1

Method of Sample size calculation. where, n = sample size. N = population size. Z = Standard normal distribution (set at1.96 corresponding to a confidence level of 95%). p = Probability of success (0.5). q = Probability of failure (0.5). e = Precision level = (0.07)

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