WorksheetsPopulations and Samples
Total questions: 11
Worksheet time: 21mins
A manager samples receipts of every fifth person in line. Out of 50 people, 4 had a mispriced item. If 600 people go to the store each day, how many can you expect to have a mispriced item?
50 people
80 people
48 people
12 people
A middle school has 490 students. Mae surveys a random sample of 60 students and finds that 24 of them have dogs. How many students are likely to have dogs?
40 students
40 students
192 students
196 students
Part of the population of 10,800 hawks at a national park are building nests. A random sample of 72 hawks shows that 12 hawks are building nests. Estimate the number of hawks building a nest in the population.
1,800 hawks
150 hawks
432 hawks
10,800 hawks
A random sample of dogs at different animal shelters shows that 12 of 60 dogs are puppies. The cities shelters collectively house 1,200 dogs each year. Estimate how many are puppies.
50 puppies
240 puppies
20 puppies
600 puppies
A random sample of 120 ticket buyers is surveyed, and 28 buyers made their purchase on the first day tickets were being sold. How many of the 4,200 total tickets are likely to have been purchased on the first day they were available?
150 tickets
35 tickets
980 tickets
233 tickets
A store manager selects 30 cartons of eggs and finds 4 cartons that have cracked eggs. If the store has 105 cartons of eggs, how many cartons can she expect to have cracked eggs in them?
15 cartons
7.5 cartons
26 cartons
14 cartons
Part of the population of 4,500 elk at a wildlife preserve is infected with a parasite. A random sample of 50 elk shows that 8 of them are infected. How many elk are likely to be infected?
720 elk
400 elk
90 elk
562.5 elk
A manufacturer fills an order for 4,200 smart phones. The quality inspector selects a random sample of 60 phones and finds that 4 are defective. How many smart phones in the order are likely to be defective?
70 smart phones
900 smart phones
1,050 smart phones
280 smart phones
The Magic Kingdom theme park has many attractions, one of which is Space Mountain. Are the people who ride Space Mountain the population, or a sample, of the theme park? Explain.
Population. They are all the people at the theme park.
Sample. They are a subset of all the people at the theme park.
Both population and sample. They are all the people at the theme park
Neither population nor sample. They are not the people at the theme park.
A survey was distributed to determine food preferences for Middle School students. Which sample is most the representative for this survey?
A group of High School students during a PE class.
A group of parents of local Middle School students.
10 Elementary School students from each of the 5 local Elementary Schools.
20 randomly selected students from 6th, 7th, and 8th grade from each local Middle School.
When a sample does not accurately represent the population it is a:
Unbiased sample
Biased sample
