/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q3-11BSC In Exercises 9鈥�20, identify wh... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 1: Q3-11BSC (page 1)

In Exercises 9鈥�20, identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster.

UFO Poll In a Kelton Research poll, 1114 Americans 18 years of age or older were called after their telephone numbers were randomly generated by a computer, and 36% of the respondents said that they believe in the existence of UFOs.

Short Answer

Expert verified

Random sampling

Step by step solution

01

Given information

The responses were taken from 1114 Americans who were 18 or above in age. They were selected through randomly generated telephone numbers.

36% of those polled stated they believed in the existence of UFOs.

02

Step 2:Identify the method of sampling

Random sampling is a sample collection method that includes participants of the study who are gathered randomly, that is, without following any order.

In the sampling process, the selections were made using the randomly generated telephone numbers by a computer.

Thus, the process of generating the numbers is completely randomized, and hence the selections can also be considered to be collected by the process of simple random sampling.

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 91影视!

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

In Exercises 29鈥�32, indicate whether the observational study used is cross-sectional, retrospective, or prospective.

Nurses鈥� Health Study II Phase II of the Nurses鈥� Health Study was started in 1989 with 116,000 female registered nurses. The study is ongoing.

In Exercises 21鈥�28, determine whether the study is an experiment or an observational study, and then identify a major problem with the study.

Online News In a survey conducted by USA Today, 1465 Internet users chose to respond to this question posted on the USA Today electronic edition: 鈥淚s news online as satisfying as print and TV news?鈥� 52% of the respondents said 鈥測es.鈥�

In Exercises 9鈥�20, identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster.

Literary Digest Poll In 1936, Literary Digest magazine mailed questionnaires to 10 million people and obtained 2,266,566 responses. The responses indicated that Alf Landon would win the presidential election. He didn鈥檛.

In Exercises 21鈥�24, refer to the data in the table below. The entries are white blood cell counts (1000 cells,ML) and red blood cell counts (million cells,ML) from male subjects examined as part of a large health study conducted by the National Center for Health Statistics. The data are matched, so that the first subject has a white blood cell count of 8.7 and a red blood cell count of 4.91, and so on.

Conclusion: If we analyze the sample data and conclude that there is a correlation between white blood cell counts and red blood cell counts, does it follow that higher white blood cell counts are the cause of higher red blood cell counts?

Determine whether the given source has the potential to create bias in a statistical study.

Arsenic in Rice. Amounts of arsenic in samples of rice grown in Texas were measured by the Food and Drug Administration (FDA).
See all solutions

Recommended explanations on Math Textbooks

Probability and Statistics

Read Explanation

Logic and Functions

Read Explanation

Decision Maths

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Statistics

Read Explanation

Geometry

Read Explanation
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.