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 (z = 1.96) and a degree of precision of + 0.03,how many more observations are needed?
Definitions:
Demand Curve
A graph showing the relationship between the price of a product and the quantity of the product that consumers are willing to purchase.
Loanable Funds
The total resources or funds available for borrowing in the financial markets, encompassing both savings and any additional credit provided by banks.
Interest Rate
The proportion of a loan that is charged as interest to the borrower, typically expressed as an annual percentage of the loan amount.
Uninsurable Risks
refers to risks that insurance companies are unwilling to cover due to their unpredictable or potentially catastrophic nature.
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