The Number of Cars Running a Red Light in a Day

question 46

Short Answer

The number of cars running a red light in a day, at a given intersection, possesses a distribution with a mean of 1.7 cars and a standard deviation of 5. The number of cars running the red light was observed on 100 randomly chosen days and the mean number of cars calculated. Describe the
Sampling distribution of the sample mean.
A) approximately normal with mean $= 1.7$ and standard deviation $= 0.5$
B) shape unknown with mean $= 1.7$ and standard deviation $= 0.5$
C) shape unknown with mean $= 1.7$ and standard deviation $= 5$
D) approximately normal with mean $= 1.7$ and standard deviation $= 5$

• A) approximately normal with mean \(= 1.7\) and standard deviation \(= 0.5\)
• B) shape unknown with mean \(= 1.7\) and standard deviation \(= 0.5\)
• C) shape unknown with mean \(= 1.7\) and standard deviation \(= 5\)
• D) approximately normal with mean \(= 1.7\) and standard deviation \(= 5\)

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Definitions:

Particle Concentration

A measurement that describes the number of particles (such as molecules, atoms, or ions) present in a given volume of a substance or mixture.

Calcium

An essential mineral in the body, crucial for bone health, muscle function, nerve signaling, and heart health.

Phosphate Level

A measurement of the amount of phosphate in the blood, which is important for bone formation, energy storage, and nerve function.

Respiratory Acidosis

Abnormal condition characterized by increased arterial carbon dioxide concentration, excess carbonic acid, and increased hydrogen ion concentration.