Logout Open In App
Open In App
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

Chapter 1: Q 1.7. (page 7)

In Exercises 1.7-1.12, classify each of the studies as either descriptive or inferential. Explain your answers.

TV Viewing Times. Data from a sample of Americans yielded the following estimates of average TV viewing time per month for all Americans 2 years old and older. The times are in hours and minutes; Q1 stands for first quarter. [SOURCE: The Cross-Platform Report, Quarter 1, 2011. Published by The Nielsen Company, © 2011.]

Short Answer

Expert verified

The given study involves inferential.

Step by step solution

01

Step 1. Given information.

The given statement is:

Data from a sample of Americans yielded the following estimates of average TV viewing time per month for all Americans 2 years old and older. The times are in hours and minutes.

02

Step 2. Classify the studies as either descriptive or inferential. 

In the given study, the average TV viewing time per month of all Americans 2 years old and older is estimated.

Furthermore, the average is based on a representative sample of Americans.

As a result, a sample of the provided population is used to estimate the population of all Americans

Therefore, the given study involves inferential statistics.

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.

Start your free trial

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

The members of a population are numbered 1-4.

(a). List the 6 possible samples (without replacement) of size 2 from this population.

(b). If an SRS of size 2 is taken from the population, what are the chances of selecting 2 and 3? Explain your answer.

(c). Use Table I in Appendix A to obtain an SRS of size 2 from the population. Start at the single-digit number in line number 17 and column number 7, read down the column, up the next, and so on.

Medical Testing on Animals. In its Summer 2013 Animal Action Report, the National Anti-Vivisection Society stated that "59% of Americans between the ages of 18 and 29 oppose medical testing on animals." The percentage of 59% was computed from sample data.

(a). Identify the population under consideration.

(b). Identify the sample under consideration.

(c). Is the statement in quotes descriptive or inferential?

(d). If you wanted to make it clear that the percentage of 59% was computed from sample data, how would you rephrase the statement in quotes?

Best-Selling Albums. The Recording Industry Association of America provides data on the best-selling albums of all time. As of May 28, 2013, the top six best-selling albums of all time (U.S. sales only), are by the artists the Eagles (E), Michael Jackson (M), Pink Floyd (P), Led Zeppelin (L), AC/DC (A), and Billy Joel (B).

(a). List the 15 possible samples (without replacement) of two artists that can be selected from the six. For brevity, use the initial provided.

(b). Describe a procedure for taking a simple random sample of two artists from the six.

(c). If a simple random sampling procedure is used to obtain two artists, what are the chances of selecting P and A? M and E?

Lifetimes of Flashlight Batteries.Two different options are under consideration for comparing the lifetimes of four brands of flashlight battery, using 20 flashlights.

(a) One option is to randomly divide 20 flashlights into four groups of 5 flashlights each and then randomly assign each group to use a different brand of battery. Would this statistical design be a completely randomized design or a randomized block design? Explain your answer.

(b) Another option is to use 20 flashlights - five different brands of 4 flashlights-each and randomly assign the 4 flashlights of each sign be a completely randomized design or a randomized block design? Explain your answer.

In a designed experiment, there are two factors, say, Factor Aand Factor B. Factor Ahas four levels, say, a1,a2,a3anda4; Factor B has two levels, say,b1andb2.

(a) Construct a schematic for the treatments similar to Table 1.8 on page 27.

(b) Use part ( a ) to determine the number of treatments.

(c) Could you have determined the answer for part ( b ) without constructing the schematic in part ( a )? Explain your answer.
See all solutions

Recommended explanations on Math Textbooks

Discrete Mathematics

Read Explanation

Pure Maths

Read Explanation

Applied Mathematics

Read Explanation

Geometry

Read Explanation

Mechanics Maths

Read Explanation

Theoretical and Mathematical Physics

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.

Sign-up for free