A smartphone company tests the battery life of every 500th phone that comes off the assembly line. What is the population in this quality control test?

The every 500th phone that is tested

All phones produced by the company

The results of the battery tests

The employees who perform the tests

A biologist wants to estimate the average weight of salmon in a river. She catches, weighs, and releases 80 salmon. Which statement correctly identifies the population and the sample?

Population: The 80 caught salmon; Sample: All salmon in the river.

Population: The river; Sample: The 80 caught salmon.

Population: All salmon in the river; Sample: The 80 caught salmon.

Population: The biologist; Sample: All salmon in the river.