A manufacturer knows that 14% of the products it produces are defective. Find the probability that among 7 randomly selected products, at least one of them is defective.
+23245 If 14% are defective, then 86% are not defective.
Therefore, (0.86)7 is the probability that none are defective: (0.86)7 = 0.3479
At least one of them is defective is 1 - (none of them is defective): 1 - 0.3479 = 0.6521
The probability that at least one of them is defective = 0.6521.
+23245 If 14% are defective, then 86% are not defective.
Therefore, (0.86)7 is the probability that none are defective: (0.86)7 = 0.3479
At least one of them is defective is 1 - (none of them is defective): 1 - 0.3479 = 0.6521
The probability that at least one of them is defective = 0.6521.
