## Question

###### Manufacturer of metal pistons finds that on averagc 12% of his pistons are defectivea) What is thc probability that batch of 6 pistons will contain defective pistons? b) What is the probability that a batch of 6 pistons will contain at Icast defective pistons?c) What is the expected number of defective pistons in batch o 6? d) What is the standard deviation of the number of defective pistons in a batch of 6?

manufacturer of metal pistons finds that on averagc 12% of his pistons are defective a) What is thc probability that batch of 6 pistons will contain defective pistons? b) What is the probability that a batch of 6 pistons will contain at Icast defective pistons? c) What is the expected number of defective pistons in batch o 6? d) What is the standard deviation of the number of defective pistons in a batch of 6?

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