A manufacturing company regularly conducts quality control checks at specified periods on the products it manufactures.​ Historically, the failure rate for LED light bulbs that the company manufactures is 12​%. Suppose a random sample of 10 LED light bulbs is selected. Complete parts​ (a) through​ (d) below.   a. What is the probability that none of the LED light bulbs are​ defective?   b. What is the probability that exactly one of the LED light bulbs is​ defective?   c. What is the probability that three or fewer of the LED light bulbs are​ defective?   d. What is the probability that six or more of the LED light bulbs are​ defective?

Question

A manufacturing company regularly conducts quality control checks at specified periods on the products it manufactures.​ Historically, the failure rate for LED light bulbs that the company manufactures is 12​%. Suppose a random sample of 10 LED light bulbs is selected. Complete parts​ (a) through​ (d) below.

 

a. What is the probability that none of the LED light bulbs are​ defective?

 

b. What is the probability that exactly one of the LED light bulbs is​ defective?

 

c. What is the probability that three or fewer of the LED light bulbs are​ defective?

 

d. What is the probability that six or more of the LED light bulbs are​ defective?

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