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Chapter 4: Q. 7 (page 236)

Online reviews Many websites include customer reviews of products, restaurants, hotels,

and so on. The manager of a hotel was upset to see that 26%of reviewers on a travel

website gave the hotel “1star”—the lowest possible rating. Explain how bias in the

sampling method could affect the estimate.

Short Answer

Expert verified

The answer is a voluntary response sample.The subjects themselves can determine whether or not they are in the sample. We will only have data about the strongest opinions

Step by step solution

01

Given information

We have to find the bias in the sampling method.

02

Explanation

The sample in the exercise prompt is a text voluntary response sample because the subjects must willingly answer the online poll (you can view the online poll without answering it), and so the subjects themselves can determine whether or not they are in the sample.Because people with the strongest opinions choose to engage in a voluntary response sample, we will only have data about the strongest opinions, resulting in us continuously overestimating or underestimating the actual opinions.

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Most popular questions from this chapter

SRS of students? At a party, there are 30 students over age 21 and 20students underage21. You choose at random 3 of those over 21 and separately choose at random 2 of those under 21 to interview about their attitudes toward alcohol. You have given every student at the party the same chance to be interviewed. Is your sample an SRS? Explain your answer.

Your statistics class has 30students. You want to ask an SRS of 5students from your class whether they use a mobile device for the online quizzes. You label the students 01,02,...,30. You enter the table of random digits at this line: 1445926056314248037165103622532249061181

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