Chapter 11.1, Problem 26PPS

(a)

To determine

To find: The type of study performed, the sample and the population.

Answer to Problem 26PPS

The solution is given below.

Explanation of Solution

The study performed is a survey because data are collected based on the responses from people about who they think will be the president.

The sample is the $2.4$ million Americans that were surveyed.

The population is all U.S. citizens of voting age in $1936$ .

(b)

To determine

To find: The prediction and actual results comparison.

Answer to Problem 26PPS

The outcome of the results are different.

Explanation of Solution

The predicted result shows that Landon would win with $57\%$ of the popular vote while the actual result shows Roosevelt won with $60.8\%$ of the popular vote.

(c)

To determine

To find: The survey was biased or not.

Answer to Problem 26PPS

The survey was biased.

Explanation of Solution

Given:

  

Yes the survey was biased. Because the sample consists of Americans who are wealthier than the average American since they can afford magazine subscriptions and automobiles, & are telephone users.

Therefore, the sample did not represent the population.