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Chapter 1: Q12BSC (page 1)

In Exercises 9鈥�12, determine whether the sampling method appears to be sound or is flawed.

Smartphone Usage In a survey of smartphone ownership, the Pew Research Center randomly selected 1006 adults in the United States.

Short Answer

Expert verified

The sampling method appears to be sound.

Step by step solution

01

Given information

The Pew Research Center studied smartphone usage using 1006 randomly selected adults in the United States.

02

Step 2:Explanation of sampling method

In the United States, the research was based on all smartphone owners. The center, however, randomly selected only 1006 adults from the population.

03

Step 3:Analysis of biasedness based on the sample

When samples are collected in a manner that they are non-biased and represent the population appropriately, the sampling method can be trusted for providing accurate observations.

In this case, the survey selected the experimental units (owners of smartphones) in a clear random way. Also, the organization is a reliable research center.

As a result, the outcomes of the observations are expected to be accurate and reliable.

Thus, the sampling method appears to be without flaws.

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Most popular questions from this chapter

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

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

Marriage Proposals In a survey conducted by TheKnot.com, 1165 engaged or married women were asked about the importance of a bended knee when making a marriage proposal. Among the 1165 respondents, 48% said that the bended knee was essential.

a. What is the exact value that is 48% of 1165 survey respondents?

b. Could the result from part (a) be the actual number of survey subjects who said that a bended knee is essential? Why or why not?

c. What is the actual number of survey respondents saying that the bended knee is essential?

d. Among the 1165 respondents, 93 said that a bended knee is corny and outdated. What percentage of respondents said that a bended knee is corny and outdated?

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