Question

a musician wanted to see what people who bought his last album thought about the songs. which choice best represents a parameter? 85% of the 50 people surveyed thought the songs were good. 50 people who bought the musicians last album. the percentage of all people who bought his last album that thought the songs were good.

Explanation:

In statistics, a parameter is a characteristic of a population. The first option is about a sample (50 surveyed people), the second is just the size of a sample. The third option is about all people who bought the album (the population), so it represents a parameter.

Answer:

The percentage of all people who bought his last album that thought the songs were good.