The Number of Cars Running a Red Light in a Day

question 38

Multiple Choice

The number of cars running a red light in a day, at a given intersection, possesses a distribution with a mean of 4.2 cars and a standard deviation of 6. 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 = 4.2 and standard deviation = 0.6
• B) approximately normal with mean = 4.2 and standard deviation = 6
• C) shape unknown with mean = 4.2 and standard deviation = 6
• D) shape unknown with mean = 4.2 and standard deviation = 0.6

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Definitions:

High-income Countries

Nations with a gross national income per capita significantly above the global average, indicating advanced economic development.

Total Wage Bill

The total wage bill refers to the aggregate amount of wages paid by an employer or within an economy to its employees over a certain period.

Domestic Output

The total value of all goods and services produced within a country's borders over a specified period of time.

Emigration

The act of leaving one's own country to settle permanently in another, moving abroad.