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Chapter 1: Q. 46 (page 53)

A politician is interested in the proportion of voters in his district who think he is doing a good job.

Short Answer

Expert verified

a. In the politician's district, the entire population is made up of voters.

b. A sample is a group of voters chosen at random from the politician's constituency.

c. This is the percentage of voters that believe this politician is doing a good job in this district.

d. The percentage of voters in this district who believe this politician is doing a good job in the sample is the statistic.

e. The variable represents the number of voters in the district who believe this politician is doing a good job, which is X=.

f. Data is given by the variable like 1000 votes or 2000 votes and so on..

Step by step solution

01

Introduction

Apoliticianissomeonewhoparticipatesinpartypoliticsorholdsorseeksanelectedgovernmentposition.
Politicians propose, support, reject, and write laws that control the land and, by implication, the people that live there.
A politician, in broad terms, is somebody who aspires to gain political power in a government.
02

Explanation of a

The population will be the voters in the politician's district, according to the information supplied.

03

Explanation of b

Based on the information supplied, a sample of this data will be drawn from a randomly selected group of voters.

04

Explanation of c

According to the information provided, the parameter of this data will be the population share of votes cast in favor of the politician who is performing well.

05

Explanation of d

Based on the information supplied, the statistic of this data will be the sample proportion of votes cast in favor of the politician who is performing well.

06

Explanation of e

Votes of voters will be the variable of this data, according to the details supplied.

07

Explanation of f

The data will be the value of the variable, such as 1000 votes or 2000 votes, based on the information supplied.

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Most popular questions from this chapter

Use the following information to answer the next seven exercises: Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average (mean) length of time in months patients live once starting the treatment. Two researchers each follow a different set of 40 AIDS patients from the start of treatment until their deaths. The following data (in months) are collected.

Researcher A: 3; 4; 11; 15; 16; 17; 22; 44; 37; 16; 14; 24; 25; 15; 26; 27; 33; 29; 35; 44; 13; 21; 22; 10; 12; 8; 40; 32; 26; 27; 31; 34; 29; 17; 8; 24; 18; 47; 33; 34

Researcher B: 3; 14; 11; 5; 16; 17; 28; 41; 31; 18; 14; 14; 26; 25; 21; 22; 31; 2; 35; 44; 23; 21; 21; 16; 12; 18; 41; 22; 16; 25; 33; 34; 29; 13; 18; 24; 23; 42; 33; 29

List two reasons why the data may differ.

Use the following information to answer the next two exercises: A study was done to determine the age, number of times per week, and the duration (amount of time) of resident use of a local park in San Jose. The first house in the neighborhood around the park was selected randomly and then every 8th house in the neighborhood around the park was interviewed.

鈥淣umber of times per week鈥� is what type of data?

a. qualitative

b. quantitative discrete

c. quantitative continuous

For the following four exercises, determine the type of sampling used (simple random, stratified, systematic, cluster, or convenience).

A group of test subjects is divided into twelve groups; then four of the groups are chosen at random.

Use the following information to answer the next seven exercises: Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average (mean) length of time in months patients live once starting the treatment. Two researchers each follow a different set of 40 AIDS patients from the start of treatment until their deaths. The following data (in months) are collected.

Researcher A: 3; 4; 11; 15; 16; 17; 22; 44; 37; 16; 14; 24; 25; 15; 26; 27; 33; 29; 35; 44; 13; 21; 22; 10; 12; 8; 40; 32; 26; 27; 31; 34; 29; 17; 8; 24; 18; 47; 33; 34

Researcher B: 3; 14; 11; 5; 16; 17; 28; 41; 31; 18; 14; 14; 26; 25; 21; 22; 31; 2; 35; 44; 23; 21; 21; 16; 12; 18; 41; 22; 16; 25; 33; 34; 29; 13; 18; 24; 23; 42; 33; 29

Can you tell if one researcher is correct and the other one is incorrect? Why?

A study was done to determine the age, number of times per week, and the duration (amount of time) of residents using a local park in San Antonio, Texas. The first house in the neighborhood around the park was selected randomly, and then the resident of every eighth house in the neighborhood around the park was interviewed.

The colors of the houses around the park are what kind of data?

a. qualitative(categorical); b. quantitative discrete; c. quantitative continuous
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