The Range of Diameters and Luminosities Displayed by Elliptical Galaxies

question 8

Multiple Choice

The range of diameters and luminosities displayed by elliptical galaxies is ____.

• A) similar to the range of spirals, and smaller than spiral galaxies on average
• B) similar to the range of spirals, and about the same as spiral galaxies on average
• C) similar to the range of spirals, and larger than spiral galaxies on average
• D) wider than the range for spirals, extending to much larger sizes than spiral galaxies
• E) wider than the range for spirals, extending to much smaller sizes than spiral galaxies

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Definitions:

Average Arrival Rate

A metric used to measure the rate at which entities (customers, goods, etc.) arrive at a facility or system over a specified period.

Average Service Rate

The average number of customers or units that can be processed over a certain time frame in a service system.

Expected to Stay

An estimation of the duration or likelihood that an individual or item remains in a particular state or location.

M/D/1

M/D/1 is a queueing model designation indicating a system with a Poisson arrival process (M), deterministic service times (D), a single server (1), and exponential service times.