When the Cepheid Variable RU Camelopardalis Stopped Pulsating,astronomers Speculated That

question 9

Multiple Choice

When the Cepheid variable RU Camelopardalis stopped pulsating,astronomers speculated that it was

• A) exhausting its helium.
• B) exhausting its hydrogen.
• C) turning off its triple alpha process.
• D) evolving out of the instability strip.
• E) becoming a red supergiant.

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Definitions:

Parameter

A numerical characteristic of a population, such as its mean or standard deviation, that is usually unknown and estimated from sample data.

Exponential Density Function

A probability density function used to model the time between events in a process where events occur continuously and independently at a constant average rate.

Density Function

A mathematical function that describes the probability distribution of a continuous random variable, indicating the likelihood of a variable taking on a particular value.

Exponential Distribution

A probability distribution used to model the time between events in a process where events occur continuously and independently at a constant rate.