11.96 Kids Attending Church. In an ABC Global Kids Study, conducted by Roper Starch Worldwide, Inc., estimates were made in various countries of the percentage of children who attend church at least once a week. Two of the countries in the survey were the United States and Germany. Considering these two countries only,
a. identify the specified attribute.
b. identify the two populations.
c. What are the two population proportions under consideration?

Short Answer

Expert verified

(a) The specified attribute is church attendance.

(b) The two populations are American children and German children.

(c) The proportion of all German children who attend church at least once a week and the proportion of all American children who attend church at least once a week are the two population proportions.

Step by step solution

01

Part (a) Step 1: Given information

To identify the specified attribute. Let, two of the countries in the survey were the United States and Germany.

02

Part (a) Step 2: Explanation

The two countries of the United States and Germany are taken into account.
The percentage of youngsters that attend church at least once a week was calculated in various countries.
The two countries of the United States and Germany are taken into account.
The provided attribute in this case is church attendance.
As a result, the specified attribute is church attendance.

03

Part (b) Step 1: Explanation

To identify the two populations. Let, two of the countries in the survey were the United States and Germany.

04

Part (b) Step 2: Explanation

The two countries of the United States and Germany are taken into account.
The percentage of youngsters that attend church at least once a week was calculated in various countries.
The two countries of the United States and Germany are taken into account.
Children from the United States and children from Germany are the two populations here.
As a result, the two populations are American children and German children.

05

Part (c) Step 1: Given information

To determine the two population proportions under consideration.

06

Part (c) Step 2: Explanation

The two countries of the United States and Germany are taken into account.
The percentage of youngsters that attend church at least once a week was calculated in various countries.
The two countries of the United States and Germany are taken into account.
As a result, the proportion of all German children who attend church at least once a week and the proportion of all American children who attend church at least once a week are the two population proportions.

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 Vaia!

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

Margin of error =0.01

Confidence level=95%

Educated guess =0.3

(a) Obtain a sample size that will ensure a margin of error of at most the one specified (provided of course that the observed value of the sample proportion is further from 0.5that of the educated guess.

(b). Compare your answer to the corresponding one and explain the reason for the difference, if any.

Smallpox Vaccine. ABCNEWS.com published the results of a poll that asked U.S. adults whether they would get a smallpox shot if it were available. Sampling, data collection, and tabulation were done by TNS Intersearch of Horsham, Pennsylvania. When the risk of the vaccine was described in detail, 4 in 10 of those surveyed said they would take the smallpox shot. According to the article, "the results have a three-point margin of error" (for a 0.95 confidence level). Use the information provided to obtain a 95% confidence interval for the percentage of all U.S. adults who would take a smallpox shot, knowing the risk of the vaccine.

Obtain a sample size that will ensure a margin of error of at most the one specified.

Margin of error=0.02

Confidence level=90%

a. Determine the sample proportion.

b. Decide whether using the one-proportion z-test is appropriate.

c. If appropriate, use the one-proportion z-test to perform the specified hypothesis test.

x=10

n=40

role="math" localid="1651300220980" H0:p=0.3

Ha:p<0.3

role="math" localid="1651300430510" α=0.05

11.95 Explain the basic idea for performing a hypothesis test, based on independent samples, to compare two population proportions.

See all solutions

Recommended explanations on Math Textbooks

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.

Sign-up for free