#Binomial distribution question!!

5 messages · Page 1 of 1 (latest)

ancient snow
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An automatic welding machine is being considerred for use in a production process. It will be considered for purchase if it is successful on 99% of its welds. Otherwise, it will not be considered efficient. A test is to be conducted with a prototype that is to perform 100 welds. The machine will be accepted for manufacture if it misses no more than 3 welds.
(a) What is the probability that a good machine will be rejected?
(b) What is the probability that an inefficient machine with 95% welding success will be accepted

What will be the p here in the formula b(x; n,p)?

long badgeBOT
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violet cove
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You would use 99% (a) and 95% in (b). How do you know one has to use a binomial distribution? Is it because it's the chapter you're studying and your teacher gave it to you as an application?

crude chasm
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You are correct, this is binom distribution