Explain the probability distrubitions in the p-chart and c-chart. Step 1. Let \( p_{j} \) denote the proportion of defective items in sample \( j, j=1,2, \ldots, K \). Find the mean \( \bar{p} \) of the sample proportions: \( \bar{p}=\left(p_{1}+p_{2}+\cdots+p_{K} 1 answer