Because 10 out of 140 chps do not conform to customer requirements, the probability of having a defective chip is p = 10/140 = 0.0714 The probability of having a good chip is q = 1 - p = 0.9286
Out of a sample of 5, the probability of finding a defective chip is ₅C₁ p¹ q⁴ = 5*0.0714*0.9286⁴ = 0.2655
The number of defective chips ofu of 5 is 0.2655*5 = 1.3275 ≈ 1
Find the area of the larger rectangle, then subtract the area of the two smaller rectangles in the corners. Separate the figure into two or three rectangles, and add the areas.
