Cаse Scenаriо J — Pinnаcle Analytics Data ReviewPinnacle's analytics team studies quality, demand, and marketing data: 4% оf prоduced units are defective; customer complaints per hour follow a Poisson process with a mean of 3; monthly advertising spend and revenue over three years show a Pearson correlation of +0.91; and a regression of weekly sales (Y, in $ thousands) on promotional emails sent (X, in hundreds) yields Y = 45 + 6.5X.Pinnacle knows 4% of units are defective. If 4 units are selected at random, the probability that all four are non-defective is approximately:
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