Probability to find fewer than twenty substandard welds

Reference no: EM13133983

Smith is a weld inspector at a shipyard. He knows from keeping track of good and substantial welds that for the afternoon shift 5% of all welds will be substandard. If Smith checks 300 of the 7500 welds completed that shift, what is the probability that he will find fewer than 20 substandard welds?

Reference no: EM13133983

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