How to compute p-values and Cohen’s d for z-tests

Convert X to z-Score Use Unit Normal Table to convert z-score to corresponding percentage/proportion Example Assume a normal distribution with μ = 100 and σ = 15 What is the probability of randomly selecting an individual with an IQ score less than 130? p(X < 130) = ? Step 1: Convert X to z-Score Z-SCORES 42 2.00 15 30 15 130 100 V X P z ................
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