Question

use the drop - down menus to identify the method used to collect data for each scenario.
while standing in front of the school, jace recorded the number of students who walked, rode their bikes, took the bus, and were driven there.
noah researched statistics online about the percentage of babies born with brown eyes.
lara knew that she had a 25% chance of winning a contest, so she flipped two coins repeatedly to determine how many times two heads occurred.

Explanation:

• For the first scenario (Jace recording students' transportation): An observational study involves watching and recording data without interfering. Jace is just observing (recording) how students come to school (walked, rode bikes, took the bus).
• For the second scenario (Lara flipping coins): An experiment is a controlled procedure to test a hypothesis. Lara is conducting a controlled action (flipping coins) to determine the probability (how many times two heads occur) related to her 25% chance of winning a contest hypothesis.

Answer:

1. Observational study
2. Experiment