A Study of College Students Stated That 25% of All

question 68

Multiple Choice

A study of college students stated that 25% of all college students have at least one tattoo. In a random sample of 80 college students, let x be the number of the students that have at least one tattoo. Find the mean and standard deviation for this binomial distribution.

• A) Mean = 20, Standard Deviation = 3.87
• B) Mean = 80, Standard Deviation = 15
• C) Mean = 20, Standard Deviation = 15
• D) Mean = 80, Standard Deviation = 3.87

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Definitions:

Demand Function

A mathematical representation of the relationship between the quantity demanded of a good and its price, along with other factors.

Undercoverage

A bias in statistical sampling where some members of the intended population are inadequately represented.

Supply and Demand

A fundamental economic model that describes the relationship between the availability of a product or service and the desire for it among consumers.

Markup Percentage

The ratio of profit added to the cost price of goods to determine the selling price, expressed as a percentage of the cost.