Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 12: Q. 31 (page 804)

A city wants to conduct a poll of taxpayers to determine the level of support for constructing a new city-owned baseball stadium. Which of the following is the primary reason for using a large sample size in constructing a confidence interval to estimate the proportion of city taxpayers who would support such a project?

(a) To increase the confidence level

(b) To eliminate any confounding variables

(c) To reduce nonresponse bias

(d) To increase the precision of the estimate

(e) To reduce under coverage

Short Answer

Expert verified

The reason is to increase the precision of the estimate i.e., option (d).

Step by step solution

01

Given Information

We are given that a city wants to conduct a poll of taxpayers to determine the level of support for constructing a new city-owned baseball stadium and we have to find out the reason for using a large sample size.

02

Explanation

Now as we know that as the sample size increases, the estimation will also be more precise and thus this is the reason of using a large sample size in constructing a confidence interval to estimate the proportion of city taxpayers who would support such a project.

Hence, option (d) is correct

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

Below are boxplots of SAT Critical Reading and Math scores for a randomly selected group of female juniors at a highly competitive suburban school.

Which of the following cannot be justified by the plots shown above?

(a) The maximum Critical Reading score is higher than the maximum Math score.

(b) Critical Reading scores are skewed to the right, whereas Math scores are somewhat skewed to the left.

(c) The median Critical Reading score for females is slightly higher than the median Math score.

(d) There appear to be no outliers in the SAT score distributions.

(e) The mean Critical Reading score and the mean Math score for females are about the same.

A distribution of exam scores has mean 60and standard deviation 18. If each score is doubled, and then 5is subtracted from that result, what will be the mean and standard deviation, respectively, of the new scores?

(a) mean=115and standard deviation=31

(b) mean=115and standard deviation=36

(c) mean=120and standard deviation=6

(d) mean=120and standard deviation=31

(e) mean=120 and standard deviation=36

Which of the following is a categorical variable?

(a) The weight of automobiles

(b) The time required to complete the Olympic marathon

(c) The average gas mileage of a hybrid car

(d) The brand of shampoo purchased by shoppers in a

grocery store

(e) The average closing price of a particular stock on the

New York Stock Exchange

Random assignment is part of a well-designed comparative experiment because

(a) It is more fair to the subjects.

(b) It helps create roughly equivalent groups before treatments are imposed on the subjects.

(c) It allows researchers to generalize the results of their experiment to a larger population.

(d) It helps eliminate any possibility of bias in the experiment.

(e) It prevents the placebo effect from occurring

Some high school physics students dropped a ball and measured the distance fallen (in centimeters) at various times (in seconds) after its release. If you have studied physics, then you probably know that the theoretical relationship between the variables is distance =490(time)2. A scatterplot of the students’ data showed a clear curved pattern. At 0.68seconds after release, the ball had fallen 220.4centimeters. How much more or less did the ball fall than the theoretical model predicts?

(a) More by 226.576centimeters

(b) More by 6.176centimeters

(c) No more and no less

(d) Less by 226.576centimeters

(e) Less by centimeters
See all solutions

Recommended explanations on Math Textbooks

Theoretical and Mathematical Physics

Read Explanation

Geometry

Read Explanation

Probability and Statistics

Read Explanation

Calculus

Read Explanation

Decision Maths

Read Explanation

Logic and Functions

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