Calling Long Distance Is Often More Expensive on Weekdays Between

question 221

Multiple Choice

Calling long distance is often more expensive on weekdays between 8 am and 5 pm than in the evening hours.Why is this the case?

• A)Telephone companies hope to discourage customers from calling long distance during the day to keep their labor costs down.
• B)The cost of making long-distance connections is higher during the day than in the evenings.
• C)Businesses who must call suppliers or customers during business hours have few alternatives and therefore have an inelastic demand during the workday compared to after-work hours.
• D)Increasingly, businesses who must call suppliers or customers during business hours resort to the internet, thereby reducing demand for long-distance calls. To make up for this fall in demand, telephone companies charge higher rates.

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Definitions:

Z Statistic

A type of standard score that indicates how many standard deviations an element is from the mean of the population.

Relative Risk

A measure in epidemiology that compares the risk of a health event among one group with the risk among another group.

Sample Proportion

A statistical measure that represents the proportion of success or a particular attribute in a sample.

Confidence Interval

A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter, giving an estimate of the uncertainty around the main measurement.