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3. The probability that a bulb produced by a factory will fuse after certain period of time is 0.05. Find the probability that out of 5 such bulbsa. None fusesb. Not more than 2 fusec. More than 2 fuse

shalini sharma , 12 Years ago
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anser 1 Answers
naitik bhise

Last Activity: 12 Years ago

 

a,P=(1-0.05)^5

b,P=no.of ways of 1 defective bulb+no. of ways of 2defective bulb

p=5C1*0.05*(0.95)^4+5C2*(0.05)^2*(0.95)^3


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