Sampling Homework

Surveying every 5th person in line at Chipotle to see what they're favorite lunch spot is.

• Biased

• Unbiased

A student surveying every 5th person who walks onto campus to find out what they're favorite subject is.

• Biased

• Unbiased

Asking the basketball team what they're favorite sport is

• Biased

• Unbiased

Asking 100 students in each grade what they're favorite sport is.

• Biased

• Unbiased

A zoologist studies a population of 800 rabbits. He tags 160 rabbits at random, of which 37 have blue eyes. Based on this data, about how many rabbits in the population have blue eyes?

What percetage of children taxi to school?

• 17%

• 13%

• 1%

• 10%

Carmen surveys a random sample of 25 students from her school. Of these students 2 are chess club members. If there are 550 students at her school, how many of them are likely to be chess club members?

Which is NOT part of an UNBIASED SAMPLE definition?

• Representative of a larger population

• Prefers quality over quantity

• Selected at random

• Large enough to provide accurate data

In a survey of 653 randonmly chosen workers from a manufacturing plant, 68 said they prefer to work the night shift. If there are a total of 2,700 workers, about how many plant workers prefer the night shift?

• 281 worker

• 16 workers

• 301 workers

• 27 workers

A dentist randomly samples 75 patients whether they prefer mint, bubblegum, or cinnamon flavor toothpaste. Of these patients, 8 said that they prefer bubblegum. Based on the results, about how many of the 1,500 total patients prefer bubblegum flavor?