part A-

Smith is a weld inspector at a shipyard. He knows from keeping track of good and substandard welds that for the afternoon shift 10% of all welds done will be substandard. More than 100,000 welds were completed during one afternoon shift. If Smith randomly selects a sample of 625 welds then what is the probability that he will find 75 or fewer substandard welds?

Round to 4 decimal places.

part B-

Smith is a weld inspector at a shipyard. He knows from keeping track of good and substandard welds that for the afternoon shift 10% of all welds done will be substandard. More than 100,000 welds were completed during one afternoon shift. If Smith randomly selects a sample of 625 welds then what is the probability that he will find 75 or more substandard welds?

Round to 4 decimal places.