A Study Was to Be Undertaken to Determine If a Particular

question 18

Multiple Choice

A study was to be undertaken to determine if a particular training program would improve physical fitness.An SRS of 31 university students was selected to be enrolled in the fitness program.One important measure of fitness is maximum oxygen uptake.Measurements of oxygen uptake in untrained individuals are known to follow a Normal distribution with a mean of  = 45 mL/kg/min.The researchers wished to determine if there was evidence that their sample of students differed from the general population of untrained subjects.The measurements made on the subjects coming into this study produced a mean of = 47.4 mL/kg/min with a standard deviation of s = 5.3 mL/kg/min.What is the appropriate alternative hypothesis in this situation?

• A)H_a: > 45
• B)H_a:  < 45
• C)H_a:   45
• D)H_a:  45
• E)H_a:  > 45

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Definitions:

Quantity of Output

Refers to the total amount of goods or services produced by a firm or an economy within a specific time period.

Total Cost

The overall expenditure associated with the creation of goods or provision of services, comprising both certain and variable costs.

Marginal Cost

The additional cost incurred by producing one more unit of a product, which can vary depending on the level of production.

Average Variable Cost

The variable cost of production divided by the quantity produced, showing the cost of producing each additional unit.