A work-sampling method is used to determine the proportion of the time a worker is idle.The following information was gathered on a random basis. 
If the manager wants a 95 percent confidence level and a degree of precision of ± 0.03,how many MORE observations are needed?
Definitions:
Product Conditions
The state or quality of goods sold, including their fitness for the intended purpose and compliance with any expressed or implied warranties.
Seller
An individual or entity that transfers goods, services, or property to another party in exchange for money or other compensation.
Common Law
The body of law derived from judicial decisions of courts and similar tribunals, rather than from statutes or official codes.
Contracts
Legally binding agreements between two or more parties that are enforceable by law.
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