Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 1: Q34 (page 12)

In Exercises 29–36, answer the given questions, which are related to percentages.

Percentages in Advertising Continental Airlines ran ads claiming that lost baggage is “an area where we’ve already improved 100% in the past six months.” What is wrong with this statement?

Short Answer

Expert verified

An improvement of 100% is not possible in the past six months.

Step by step solution

01

Given information

The airline ad claims that there is 100% improvement in the past six months in the area of lost baggage.

02

Making percentage Interpretation of percentage

X percent value means that if a set assumed as 100 is divided into hundred equal parts, then x parts are equivalent to x%.

03

Identifying the wrong element in the stated claim

An improvement of 100% since the last six months in lost baggage implies that the number of baggage lost after this period is zero.

This condition is not possible.

Further, if 100% improvement is made in the past six months, there is no scope of improvement in this area after that period, which is also not possible.

Thus, the claim in the advertisement is wrong.

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

Discrete/ Continuous Data Which of the following describe discrete data?

a. The numbers of people surveyed in each of the next several years for the National Health and Nutrition Examination Surveys.

b. The exact foot lengths (measured in cm) of a random sample of statistics students.

c. The exact times that randomly selected drivers spend texting while driving during the past 7 days.

In Exercises 17–20, refer to the sample of body temperatures (degrees Fahrenheit) in the table below. (The body temperatures are from a data set in Appendix B.).

Subject


12345
8 AM9798.597.697.798.7
12 AM97.697.89898.498.4

Conclusion If we analyze the listed body temperatures with suitable methods of statistics, we conclude that when the differences are found between the 8 AM body temperatures and the 12 AM body temperatures, there is a 64% chance that the differences can be explained by random results obtained from populations that have the same 8 AM and 12 AM body temperatures. What should we conclude about the statistical significance of those differences?

Determine whether the data are from discrete data or continuous data set.

McDonald’s In a study of service times at a McDonald’s drive-up window, the numbers of cars serviced each hour of several days are recorded.

In Exercises 21–24, 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.

Given the context of the data in the table, what issue can be addressed by conducting a statistical analysis of the measurements?

What’s Wrong? In Exercises 25–28, identify what is wrong.

The electronic cigarette maker V2 Cigs sponsored a poll showing that 55% of

smokers surveyed say that they feel ostracized “sometimes,” “often,” or “always.”
See all solutions

Recommended explanations on Math Textbooks

Decision Maths

Read Explanation

Geometry

Read Explanation

Discrete Mathematics

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Logic and Functions

Read Explanation

Applied Mathematics

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