The Number of Cars Running a Red Light in a Day

question 6

Multiple Choice

The number of cars running a red light in a day, at a given intersection, possesses a distribution with a mean of 2.4 cars and a standard deviation of 4. 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 = 2.4 and standard deviation = 4
• B)shape unknown with mean = 2.4 and standard deviation = 0.4
• C)approximately normal with mean = 2.4 and standard deviation = 0.4
• D)shape unknown with mean = 2.4 and standard deviation = 4

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Definitions:

Magnetic Drain Plug

A type of plug placed in the oil pan or similar component, featuring a magnet that attracts and holds metal fragments to prevent them from circulating in the system.

Transmission Fluid

A special lubricant designed for transmissions, providing cooling and the necessary pressure for operation, while also lubricating moving parts within the transmission.

Main Pressure

The primary hydraulic pressure in a system, such as an automatic transmission, crucial for its operation and control of gears.

Accumulator Seals

Seals used in hydraulic accumulators to prevent fluid leaks, ensuring the system's pressure retention and efficiency.