Warning: foreach() argument must be of type array|object, bool given in /var/www/html/web/app/themes/studypress-core-theme/template-parts/header/mobile-offcanvas.php on line 20

Student archaeologists An archaeological dig turns up large numbers of pottery shards,

broken stone tools, and other artifacts. Students working on the project classify each

artifact and assign a number to it. The counts in different categories are important for

understanding the site, so the project director chooses 2%of the artifacts at random and

checks the students’ work. Identify the population and the sample.

Short Answer

Expert verified

Population: Pottery shards discovered during the dig.

Sample:Two percent of ceramic shards

Step by step solution

01

Given information

We have to find the population and the sample

02

Explanation

A sample survey picks a group of people from a larger group of people about whom we wish to learn more.

Pottery shards discovered during the dig.

Two percent of ceramic shards are verified as a sample.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Weight? Wait what? Marcos asked a random sample of 50mall shoppers for their weight. Twenty-five of the shoppers were asked directly and the other 25 were asked anonymously by means of a “secret ballot.” The mean reported weight was13 pounds heavier for the anonymous group. Explain why the two means are so different.

How is your room? A hotel has 30floors with 40rooms per floor. The rooms on one side of the hotel face the water, while rooms on the other side face a golf course. There is an extra charge for the rooms with a water view. The hotel manager wants to select 120rooms and survey the registered guest in each of the selected rooms about his or her overall satisfaction with the property.

a. Describe how to obtain a sample of 120rooms using stratified random sampling. Explain your choice of strata and why this method might be preferred to simple random sampling.

b. Describe how to obtain a sample of 120rooms using cluster sampling. Explain your choice of clusters and why this method might be preferred to simple random sampling.

Far from home? A researcher wants to estimate the average distance that students at a large community college live from campus. To find out, she surveys a simple random sample of students from the registrar’s database.

a. Will the researcher’s sample result be exactly the same as the true population's mean? Explain your answer.

b. Which would be more likely to produce a sample result closer to the true population value: an SRS of 100students or an SRS of 50students? Explain your answer.

A farmer is experimenting to determine which variety of apple trees, Fuji or Gala, will produce more fruit in his orchard. The orchard is divided into 20equally sized square plots. He has 10trees of each variety and randomly assigns each tree to a separate plot in the orchard. What is the experimental unit (s) in this study? a. The trees; b. The farmer; c. The plots d. The orchard e. The apples

Running red lights An SRS of 880 drivers was asked: “Recalling the last

ten traffic lights you drove through, how many of them were red when you entered the

intersections?” Of the 880 respondents, 171 admitted that at least one light had been red.

A practical problem with this survey is that people may not give truthful answers. Explain

the likely direction of the bias.

See all solutions

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free