Algebra-1

Question Analysis
This question involves a two-way frequency table with variables "sport participation" (plays/does not play) and "instrument participation" (plays/does not play).
The main focus is on finding the marginal frequency for the column "Plays an Instrument".

Key Concept Explanation
Marginal Frequency: The total value in the "Total" row or column of a two-way table, representing the total count for a single category (ignoring the other variable). For columns, it is the sum of all joint frequencies in that column.

Step-by-Step Solution
Locate the column labeled "Plays an Instrument".
The marginal frequency for this column is the "Column Total" value at the bottom o...