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.

Step-by-step explanation:

I.  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

This is an observational study because this is taken as observing all possible ways.

2. Noah researched statistics online about the percentage of babies born with brown eyes.

This is not directly done but from primary data already collected already.  Hence this is secondary data taken from published data.

3. 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.

This is already having an idea of 25% she wants to check it.  This is simulation.

This is referred to as an observational study because all the possible ways and methods were explored to arrive at an accurate data.

Noah made his research to find out the statistics involving the percentage of babies born with brown eyes. This is referred to as a secondary data as it wasn't done directly by him.

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 is an example of Simulation as she wanted to check if se will arrive at the same result.

Read more about Data collection here link

c. (3,2,6) is the answer.

unless you made a typo, the answers are both a and c.

step-by-step explanation:

1.5/3 is .5 whereas 3/9 is .3333333 not proportional

22/33 is .66666 and 4/6 is also .66666 proportional

2/4 is .5 whereas 142/213 is .66666 not proportional

14/7 is 2 and 7/3.5 is also 2 proportional

you could've also checked it by doing this simple division:

if the larger fraction divides with the smaller fraction to equal 1, it is proportional. so let me show you what i mean:

when i divide 22/33 by 4/6 i get 1, so we know it is proportional, and it is the same with 14/7 and 7/3.5. now if i divide 3/9 by 1.5/3 i get .66666 so therefore we know it is not proportional.

there are many ways to do this so i wanted to show you some possible ways.