A City Planner Wants to Construct a Confidence Interval for the Proportion

question 39

Multiple Choice

A city planner wants to construct a confidence interval for the proportion of workers who would take public transportation to work if it were available. What sample size should he use to estimate the proportion to within 4 percentage points at a 90% level of confidence?

• A) 30
• B) 423
• C) 218
• D) 842
• E) 601

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Definitions:

EEPROM

EEPROM, or Electrically Erasable Programmable Read-Only Memory, is a type of non-volatile memory used in computers and other devices to store small amounts of data that must be saved when power is removed.

Zener Diode

A type of semiconductor diode that allows current to flow in the forward direction like a normal diode, but also in the reverse direction when the voltage is above a certain value known as the breakdown voltage.

Electrical Noise Interference

Electrical Noise Interference refers to unwanted disturbances in electrical signals that can cause errors or malfunctions in electronic circuits and communication systems.

Logic Circuits

Electronic circuits designed to execute logical operations, where the output depends logically on one or more inputs.