Find probability pack has exaclty two defective batteries

Reference no: EM13137374

Its known that 5% of all AA bateries made by Power Manufactures are defective. AA batteries are sold in packs of 4

a) Find the probability that a pack of 4 has exaclty 2 defective batteries

b) Find the probability that a pack of 4 has at least one defective battery

Reference no: EM13137374

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