Identify the population and sample in the following study:
1. A study was conducted on 418 teenagers diagnosed with ADHD to find a link between diet and ADHD

Determine if the numerical value is parameter or a statistic:
1. A survey of 500 high school juniors found 85% voted no to the new contract offer

2.All teachers that are in the CTA voted no to the new contact offer

3.A survey of 12,000 central flordians found that only 28% had more than $1000 in their savings account​