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Mathematics 10 Online
OpenStudy (anonymous):

URGGGEEEENT! A set of 10 lamps burn throughout the year. A single lamp has an 80% (0.8) chance of failing during the year. What is the probability that either 6 or 7 lamps are working at the end of the year? I know I must use binomial distribution but I'm not exactly how - also in the binomial distribution formula, is the *n above r* thing permutation or combination?

OpenStudy (anonymous):

This is the last thing I don't know how to do for my math exam that starts in 1 hour's time (but I have to get ready in 10 minutes' time to leave)

OpenStudy (anonymous):

Binomial distribution.

OpenStudy (anonymous):

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