The Z-Test Is Used When the Number of Observations (Sample

question 26

Multiple Choice

The Z-test is used when the number of observations (sample size) is ___________ and the population standard deviation is ___________.

• A) small; known
• B) small; unknown
• C) large; known
• D) large; unknown

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Definitions:

Crickets

Insects of the family Gryllidae, known for their chirping sounds produced by rubbing their wings together, often used as indicators of temperature.

Intensity Threshold

The minimum level of stimulus required to elicit a perceptible response or reaction in a biological system.

Sound Frequency

The number of sound vibrations per second, measured in hertz (Hz), affecting the pitch of the sound.

Crickets

Insects of the order Orthoptera, known for the chirping sound males make by rubbing their wings together, often associated with summer nights.