A Polling Agency Wants to Determine the Size of a Random

question 15

Multiple Choice

A polling agency wants to determine the size of a random sample needed to estimate theproportion of homeowners who have an electronic home security system. The estimate should havemargin of error no more than 4 percentage points at a 95% level of confidence. Choose the mostconservative answer that is closest to your calculated number, rounding to the nearest wholeperson.

• A) They should poll at least 1100 people.
• B) They should poll at least 600 people.
• C) They should poll at least 1000 people.
• D) They should poll at least 500 people.

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Definitions:

Absolute Truth

A fact or principle that is believed to be universally valid, independent of context or situation.

Intellectual Development

The growth and change in intellectual capabilities, such as learning, thinking, reasoning, and problem-solving.

Authority Figures

Individuals who hold power or control in social structures, typically held in high regard and expected to be obeyed and respected.

Crossover Effect

Shifts in behaviors such as drug use that is related to age and race, such that the relative frequency of a behavior reverses between or over time. For example, White female marijuana users use more often than Black female users until their mid-twenties when frequency of use for Black female users matches or exceeds that of White female users.