/*! 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} Q 29. Baseball tickets Suppose you wan... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 4: Q 29. (page 229)

Baseball tickets Suppose you want to know the average amount of money spent by the fans attending opening day for the Cleveland Indians baseball season. You get permission from the team鈥檚 management to conduct a survey at the stadium, but they will not allow you to bother the fans in the club seating or box seats (the most expensive seating). Using a computer,

you randomly select 500 seats from the rest of the stadium. During the game, you ask the fans in those seats how much they spent that day.

(a) Provide a reason why this survey might yield a biased result.

(b) Explain whether the reason you provided in (a) is a sampling error or a non sampling error.

Short Answer

Expert verified

Part (a) The selection bias or under coverage bias.

Part (b) Non-sampling error.

Step by step solution

01

Part (a) Step 1: Given information

Number of seats randomly selected, n=500

We must explain why this poll could produce a biased result and the likely direction of the bias.

02

Part (a) Step 2: Concept

Non-sampling mistakes, on the other hand, are the most significant errors in even the most meticulous surveys. These have nothing to do with selecting a sample and can be found in any census. Nonresponse is the single biggest issue with a sample: people can't be reached or refuse to respond. Response bias can occur when respondents give incorrect replies. Finally, the precise wording of questions has a significant impact on the responses.

03

Part (a) Step 3: Explanation

The supporters in the club seating are not bothered by this study. However, we were curious in how much money all of the supporters spent in the stadium. As a result, the demographic segment that caused selection or under coverage bias is excluded.

04

Part (b) Step 1: Explanation

The supporters in the club seating are not bothered by this study. However, we were curious in how much money all of the supporters spent in the stadium. As a result, the demographic segment that caused selection or under coverage bias is excluded. This sample approach will exhibit undercover bias, resulting in a non-sampling error.

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

Got deodorant? A group of students wants to perform an experiment to determine whether Brand A or Brand B deodorant lasts longer. One group member

suggests the following design: Recruit 40student volunteers鈥�20male and 20female. Separate by gender, since male and female bodies might respond

differently to deodorant. Give all the males Brand A deodorant and all the females Brand B. Have each student rate how well the deodorant is still working at the end of the school day on a 0 to 10 scale. Then compare ratings for the two treatments.

(a) Identify any flaws you see in the proposed design for this experiment.

(b) Describe how you would design the experiment. Explain how your design addresses each of the problems you identified in (a).

A sampling at the mall You have probably seen the mall interviewer, approaching people passing by with a clipboard in hand. Explain why even a large sample of mall shoppers would not provide a trustworthy estimate of the current unemployment rate.

Each of the following is a source of error in a sample survey. Label each as sampling error or non sampling error, and explain your answers.

(a) The telephone directory is used as a sampling frame.

(b) The person cannot be contacted in five calls.

(c) Interviewers choose people walking by on the sidewalk to interview.

2. A survey paid for by makers of disposable diapers found that 84% of the sample opposed banning disposable diapers. Here is the actual question:

Effects of TV advertising Figure 4.3displays the six treatments for a two-factor experiment on TV advertising. Suppose we have 150students who are willing to serve as subjects. Describe how you would randomly assign the subjects to the treatments

(a) using slips of paper.

(b) using Table D.

(c) using technology.

Internet telephone calls You can use Voice over Internet Protocol (VoIP) to make long-distance

telephone calls over the Internet. How will the cost affect the use of this service? A university plans an experiment to find out. It will offer the service to all 350 students in one of its dormitories. Some students will pay a low flat rate. Others will pay higher rates at peak periods and very low rates off-peak. The university is interested in the amount and time of use and inthe effect on the congestion of the network.
See all solutions

Recommended explanations on Math Textbooks

Probability and Statistics

Read Explanation

Logic and Functions

Read Explanation

Mechanics Maths

Read Explanation

Decision Maths

Read Explanation

Applied Mathematics

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.