What Is the Lifetime on the Main Sequence of a 2-Solar-Mass

question 27

Multiple Choice

What is the lifetime on the main sequence of a 2-solar-mass star compared to the approximately 10-billion-year life of our sun? Pick the best answer.

• A) 1.8*10¹¹ years
• B) 1.8*10¹⁰ years
• C) 1.8*10⁹ years
• D) 1.8*10⁶ years
• E) 1.8*10³ years

---

Definitions:

Inferential Statistics

The branch of statistics that allows one to make predictions or inferences about a population based on a sample of data.

Type II Error

Deciding wrongly that there was no significant result when in fact there was.

Interval and Ratio

Levels of measurement in statistics where interval data has no true zero point and ratio data has a meaningful zero, allowing for comparison of ratios.

ANOVA

Analysis of variance. A comparison of the variance within groups with the variance among groups. See also MANOVA.