Compute Probabilities of a Sample Proportion
-Smith Is a Weld $5 \%$

question 1

Multiple Choice

Compute Probabilities of a Sample Proportion
-Smith is a weld inspector at a shipyard. He knows from keeping track of good and substandard welds that for the afternoon shift $5 \%$ of all welds done will be substandard. If Smith checks 300 of the 7500 welds completed that shift, would it be unusual for Smith to find 30 or more substandard welds?

• A) Yes
• B) \(\mathrm { No }\)

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