A Star Has an Absolute Magnitude M = 1

question 83

Multiple Choice

A star has an absolute magnitude M = 1.69 and an apparent magnitude m = 1.04. How far away is this star?

• A) 24.2 ly
• B) 43.2 ly
• C) 59.7 ly
• D) 160.2 ly

---

Definitions:

Null Hypothesis

A theory that assumes there is no statistical significance in a set of given observations, with the aim of testing the validity of this assumption.

Student-t

A probability distribution used in statistical science, particularly in scenarios with small sample sizes or unknown variances.

F-distribution

A probability distribution that arises in the testing of whether two sample variances are equal, used in ANOVA and other tests involving multiple variances.

Chi-squared Distribution

A distribution used in statistics that measures how expectations compare to actual observed data, particularly in the context of categorical variables.