Why Does the Hertzsprung-Russell Diagram of a Globular Cluster NOT

question 167

Multiple Choice

Why does the Hertzsprung-Russell diagram of a globular cluster NOT contain any stars with high luminosity and high temperature on the main sequence?

• A) These high-mass stars evolved away from the main sequence long ago.
• B) Stars that will occupy this position on the main sequence have not yet evolved there from the protostar stage.
• C) The stars that were in this position on the main sequence have undergone splitting into binary stars and hence appear lower down on the diagram.
• D) This type of cluster contains only low-mass stars and has never had high-luminosity stars on its main sequence.

Differentiate between elastic, unit-elastic, and inelastic demand.

Analyze factors that influence the elasticity of demand for goods and services.

Calculate and interpret the cross elasticity of demand.

Calculate and interpret the income elasticity of demand.

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Definitions:

Control Limits

Statistical boundaries set in quality control processes to identify when a process is out of control, based on specifications or historical performance data.

Upper Control Limit

The highest value a process variable can reach before it is considered to be out of control in a statistical quality control chart.

Sample Proportion

The ratio of members within a sample that have a particular attribute to the total number of members in the sample.

Level Shift

A sudden change in the baseline level of a time series dataset.