/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q.AP4.6 - Cumulative AP Practise Test The town council wants to estima... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 12: Q.AP4.6 - Cumulative AP Practise Test (page 827)

The town council wants to estimate the proportion of all adults in their medium-sized town who favor a tax increase to support the local school system. Which of the

following sampling plans is most appropriate for estimating this proportion?

a. A random sample of 250names from the local phone book

b. A random sample of 200parents whose children attend one of the local schools

c. A sample consisting of 500people from the city who take an online survey about the issue

d. A random sample of 300homeowners in the town

e. A random sample of 100people from an alphabetical list of all adults who live in the town

Short Answer

Expert verified

The most appropriate sampling plan is

e. A random sample of 100people from an alphabetical list of all adults who live in the town

Step by step solution

01

Given information 

Given in the question that, the town council wants to estimate the proportion of all adults in their medium-sized town who favor a tax increase to support the local school system. We need to find a most appropriate sampling plans for estimating this proportion from the options.

02

Explanation

The town council wants to know how many adults in their medium-sized town support raising taxes to fund the local education system. As a result, we must consider the three conditions for computing a population proportion hypothesis test: random, independent, and normal.

As a result, option (e) is the most appropriate sample plan since everyone in the population is expected to be listed in the alphabetical list of all adults, and because we choose a random sample from the list, the random requirement will be satisfied. The prerequisites are not met in the rest of the options. As a result, option (e) is the proper choice.

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.

Over 30 million students worldwide already upgrade their learning with 91影视!

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

Some high school physics students dropped a ball and measured the distance fallen (in centimeters) at various times (in seconds) after its release. If you have studied physics, you probably know that the theoretical relationship between the variables is distance=490(time)2. Which of the following scatterplots would not approximately follow a straight line?

a. A plot of distance versus (time)2

b. A plot of distanceversus time

c. A plot of distance versus time

d. A plot of ln(distance) versus ln(time)

e. A plot of log(distance) versus log(time)

The swinging pendulum Refer to Exercise 33. Here is a graph of the period versus length, along with output from a linear regression analysis using these variables.

a. Give the equation of the least-squares regression line. Define any variables you use. b. Use the model from part (a) to predict the period of a pendulum with length 80centimeters.

Brawn versus brain How is the weight of an animal鈥檚 brain related to the weight of its body? Researchers collected data on the brain weight (in grams) and body weight (in Page Number: 813 Page Number: 814 kilograms) for 96species of mammals. The following figure is a scatterplot of the logarithm of brain weight against the logarithm of body weight for all 96species. The least-squares regression line for the transformed data is

logy鈭�=1.01+0.72logxlogy^=1.01+0.72logx

Based on footprints and some other sketchy evidence, some people believe that a large ape-like animal, called Sasquatch or Bigfoot, lives in the Pacific Northwest. Bigfoot鈥檚 weight is estimated to be about 127kilograms (kg). How big do you expect Bigfoot鈥檚 brain to be?

Park rangers are interested in estimating the weight of the bears that inhabit their state. The rangers have data on weight (in pounds) and neck girth (distance around the neck in inches) for 10randomly selected bears. Here is some regression output for these data:

Which of the following represents a 95% confidence interval for the slope of the population least-squares regression line relating the weight of a bear and its neck girth?

a. 20.230卤1.695

b. 20.230卤3.83

c. 20.230卤3.91

d. 20.230卤20.22

e. 26.7565卤3.83

Beer and BAC How well does the number of beers a person drinks predict his or her blood alcohol content (BAC)? Sixteen volunteers aged 21or older with an initial BAC of 0took part in a study to find out. Each volunteer drank a randomly assigned number of cans of beer. Thirty minutes later, a police officer measured their BAC. A least-squares regression analysis was performed on the data using x=number of beers and y=BAC. Here is a residual plot and a histogram of the residuals. Check whether the conditions for performing inference about the regression model are met.
See all solutions

Recommended explanations on Math Textbooks

Decision Maths

Read Explanation

Discrete Mathematics

Read Explanation

Pure Maths

Read Explanation

Mechanics Maths

Read Explanation

Probability and Statistics

Read Explanation

Logic and Functions

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.