A Website Advertises Job Openings on Its Website,but Job Seekers

question 72

Multiple Choice

A website advertises job openings on its website,but job seekers have to pay to access the list of job openings.The website recently completed a survey to estimate the number of days it takes to find a new job using its service.It took the last 30 customers an average of 60 days to find a job.Assume the population standard deviation is 10 days.Calculate a 95% confidence interval of the population mean number of days it takes to find a job.

• A) [40.4000,79.6000]
• B) [55.9085,64.0915]
• C) [56.4215,63.5785]
• D) [56.9966,63.0034]

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Definitions:

Total Fixed Cost

The sum of all costs required to produce any product or service, which remain unchanged regardless of the company's level of production or output.

Average Variable Cost

The cost that varies with the level of output, divided by the total quantity of output produced, reflecting the average cost per unit of variable expenses.

Average Fixed Cost

The fixed costs of production divided by the quantity of output produced, indicating the cost per unit.

Average Total Cost

The total of all costs (fixed and variable) divided by the total output produced, representing the per-unit cost on average.