Statistic vs Parameter

The average annual salary for 35 of a company's 1200 accountants is $68,000.

In a survey of a sample of high school students, 43% said that their mother has taught them the most about managing money.

In a recent survey of 1503 adults in the United States, 53% said they use both a landline and a cell phone,

In a survey of a sample of computer users, 8% said their computer had a malfunction that needed to be repaired by a service technician.

A school principal wants to see which subject the 845 students in his school liked best.
Which choice best represents a parameter?

What word best describes this definition: a numerical value that describes the population. Mean or average from the population, denoted µ (mu).

What word best describes this definition: a numerical value that is calculated from a sample. Mean or average from the sample, denoted x̄ (x-bar).

The math department of Anne Arundel County public schools sends out a survey to 300 randomly selected high school students. In the survey, they ask students to state how many hours they spend doing math homework in a typical week. The average amount of time was 42 minutes. Who is the SAMPLE?

The math department of Anne Arundel County public schools sends out a survey to 300 randomly selected high school students. In the survey, they ask students to state how many hours they spend doing math homework in a typical week. The average amount of time was 42 minutes. What is the PARAMETER (μ: population mean)?

The math department of Anne Arundel County public schools sends out a survey to 300 randomly selected high school students. In the survey, they ask students to state how many hours they spend doing math homework in a typical week. The average amount of time was 42 minutes. What is the STATISTIC (x̄: sample mean)?