Fundamentals of Statistics (5th Edition)

5th Edition

ISBN: 9780134510026

Author: Sullivan

Publisher: PEARSON

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Textbook Question

Chapter 9.3, Problem 1AYU

For what type of variable does it make sense to construct a confidence interval about a population proportion?

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Chapter 9 Solutions

Fundamentals of Statistics (5th Edition)

Ch. 9.1 - A _____ _____ is the value of a statistic that...Ch. 9.1 - The _____ ___ _____ represents the expected...Ch. 9.1 - True or False: A 95% confidence interval for a...Ch. 9.1 - The value z2 represents the of the distribution.Ch. 9.1 - As the level of confidence of a confidence...Ch. 9.1 - As the sample size used to obtain a confidence...Ch. 9.1 - In Problems 710, determine the critical value z/2...Ch. 9.1 - In Problems 710, determine the critical value z/2...Ch. 9.1 - In Problems 710, determine the critical value z/2...Ch. 9.1 - In Problems 710, determine the critical value z/2...

Ch. 9.1 - In Problems 1114, determine the point estimate of...Ch. 9.1 - In Problems 1114, determine the point estimate of...Ch. 9.1 - In Problems 1114, determine the point estimate of...Ch. 9.1 - In Problems 1114, determine the point estimate of...Ch. 9.1 - In Problems 1520, construct a confidence interval...Ch. 9.1 - In Problems 1520, construct a confidence interval...Ch. 9.1 - In Problems 1520, construct a confidence interval...Ch. 9.1 - In Problems 1520, construct a confidence interval...Ch. 9.1 - Prob. 19AYU Ch. 9.1 - In Problems 1520, construct a confidence interval...Ch. 9.1 - NW You Explain It! New Deal Policies In response...Ch. 9.1 - Prob. 22AYU Ch. 9.1 - You Explain It! Valentines Day A Rasmussen Reports...Ch. 9.1 - Prob. 24AYU Ch. 9.1 - NW Giving Blood A survey of 2306 adult Americans...Ch. 9.1 - Saving for Retirement? A Retirement Confidence...Ch. 9.1 - Luxury or Necessity? A random sample of 1003 adult...Ch. 9.1 - Family Values In a USA Today/Gallup poll, 768 of...Ch. 9.1 - Prob. 29AYU Ch. 9.1 - Reading In a survey of 700 community college...Ch. 9.1 - Phone in the John In a survey conducted by the...Ch. 9.1 - Deficit Reduction The Sullivan Statistics Survey I...Ch. 9.1 - Random Walk Go to...Ch. 9.1 - Language The Sullivan Statistics Survey I asks, Is...Ch. 9.1 - NW High-Speed Internet Access A researcher wishes...Ch. 9.1 - Home Ownership An urban economist wishes to...Ch. 9.1 - A Penny for Your Thoughts A researcher for the...Ch. 9.1 - Credit-Card Debt A school administrator is...Ch. 9.1 - Football Fans A television sports commentator...Ch. 9.1 - Prob. 40AYU Ch. 9.1 - Prob. 41AYU Ch. 9.1 - Prob. 42AYU Ch. 9.1 - Senate Race Gallup polled 982 likely voters...Ch. 9.1 - Cauliflower? Jane wants to estimate the proportion...Ch. 9.1 - Walk to Work Alan wants to estimate the proportion...Ch. 9.1 - Putting It Together: Hand Washing The American...Ch. 9.1 - Prob. 48AYU Ch. 9.1 - Prob. 49AYU Ch. 9.1 - Prob. 50AYU Ch. 9.1 - Prob. 51AYU Ch. 9.1 - Prob. 52AYU Ch. 9.1 - Prob. 53AYU Ch. 9.1 - The 114th Congress of the United States of America...Ch. 9.2 - As the number of degrees of freedom in the...Ch. 9.2 - True or False: The t-distribution is centered at .Ch. 9.2 - The notation t is the t-value such that the area...Ch. 9.2 - True or False: The value of t0.10 with 5 degrees...Ch. 9.2 - True or False: To construct a confidence interval...Ch. 9.2 - Prob. 6AYU Ch. 9.2 - NW a. Find the t-value such that the area in the...Ch. 9.2 - a. Find the t-value such that the area in the...Ch. 9.2 - In Problems 912. a simple random sample of size n ...Ch. 9.2 - In Problems 912. a simple random sample of size n ...Ch. 9.2 - In Problems 912. a simple random sample of size n ...Ch. 9.2 - In Problems 912. a simple random sample of size n ...Ch. 9.2 - In Problems 1316, determine the point estimate of...Ch. 9.2 - In Problems 1316, determine the point estimate of...Ch. 9.2 - Prob. 15AYU Ch. 9.2 - In Problems 1316, determine the point estimate of...Ch. 9.2 - A simple random sample of size n is drawn from a...Ch. 9.2 - A simple random sample of size n is drawn from a...Ch. 9.2 - Prob. 19AYU Ch. 9.2 - A simple random sample of size n is drawn. The...Ch. 9.2 - You Explain It! Hours Worked In a survey conducted...Ch. 9.2 - You Explain It! Sleeping A 90% confidence interval...Ch. 9.2 - Prob. 23AYU Ch. 9.2 - Prob. 24AYU Ch. 9.2 - Hours Worked Revisited For the Hours Worked survey...Ch. 9.2 - Sleeping Revisited Refer to the Sleeping results...Ch. 9.2 - Blood Alcohol Concentration A random sample of 51...Ch. 9.2 - Hungry or Thirsty? How much time do Americans...Ch. 9.2 - Tootsie Pops A Tootsie Pop is a sucker with a...Ch. 9.2 - How Much Do You Read? A recent Gallup poll asked...Ch. 9.2 - NW pH of Rain The following data represent the pH...Ch. 9.2 - Travel Taxes Travelers pay taxes for flying, car...Ch. 9.2 - Crash Test Results The following data represent...Ch. 9.2 - Crawling Babies The following data represent the...Ch. 9.2 - Housing Starts The following data represent the...Ch. 9.2 - PepsiCo Stock Volume The trade volume of a stock...Ch. 9.2 - Tornadoes Go to...Ch. 9.2 - Tax Rate The Sullivan Statistics Survey II asks,...Ch. 9.2 - Prob. 39AYU Ch. 9.2 - Prob. 40AYU Ch. 9.2 - NW Sample Size Dr. Paul Oswiecmiski wants to...Ch. 9.2 - Sample Size Dr. Paul Oswiecmiski wants to estimate...Ch. 9.2 - Reading A recent Gallup poll asked Americans to...Ch. 9.2 - Television A researcher wanted to determine the...Ch. 9.2 - Prob. 45AYU Ch. 9.2 - Effect of Outliers The following small data set...Ch. 9.2 - Putting It Together: Smoking Cessation Study...Ch. 9.2 - How Many Drinks? A question on the General Social...Ch. 9.2 - Prob. 51AYU Ch. 9.2 - The procedure for constructing a t-interval is...Ch. 9.2 - Prob. 53AYU Ch. 9.2 - Prob. 54AYU Ch. 9.2 - Suppose you have two populations: Population AAll...Ch. 9.2 - Prob. 56AYU Ch. 9.3 - For what type of variable does it make sense to...Ch. 9.3 - For what type of variable does it makes sense to...Ch. 9.3 - What requirements must be satisfied in order to...Ch. 9.3 - What requirements must be satisfied in order to...Ch. 9.3 - In Problems 512, construct the appropriate...Ch. 9.3 - Prob. 6AYU Ch. 9.3 - Prob. 7AYU Ch. 9.3 - Prob. 8AYU Ch. 9.3 - Prob. 9AYU Ch. 9.3 - Prob. 10AYU Ch. 9.3 - Prob. 11AYU Ch. 9.3 - Prob. 12AYU Ch. 9.3 - Prob. 13AYU Ch. 9.3 - Prob. 14AYU Ch. 9.3 - Worried about Retirement? In a survey of 1008...Ch. 9.3 - Theme Park Spending In a random sample of 40...Ch. 9.3 - Fastball Clayton Kershaw of the Los Angeles...Ch. 9.3 - Prob. 18AYU Ch. 9.3 - Sleep Apnea and Gum Disease Sleep apnea is a...Ch. 9.3 - Weight Gain Researchers conducted a study to see...Ch. 9.3 - Prob. 21AYU Ch. 9.3 - Researchers at the Gallup Organization asked a...Ch. 9.3 - A researcher wanted to know whether consumption of...Ch. 9.3 - Prob. 24AYU Ch. 9 - Find the critical t-value for constructing a...Ch. 9 - IQ Scores Many of the examples and exercises in...Ch. 9 - Prob. 3RE Ch. 9 - Prob. 4RE Ch. 9 - The area under the t-distribution with 18 degrees...Ch. 9 - Which is larger, the area under the t-distribution...Ch. 9 - Prob. 7RE Ch. 9 - A simple random sample of size n is drawn from a...Ch. 9 - A simple random sample of size n is drawn from a...Ch. 9 - Long Life? In a survey of 35 adult Americans, it...Ch. 9 - Prob. 11RE Ch. 9 - Prob. 12RE Ch. 9 - Prob. 13RE Ch. 9 - Prob. 14RE Ch. 9 - Hypertension In a random sample of 678 adult males...Ch. 9 - Prob. 1CT Ch. 9 - Prob. 2CT Ch. 9 - A question on the General Social Survey was this:...Ch. 9 - Prob. 4CT Ch. 9 - The campus at Joliet Junior College has a lake. A...Ch. 9 - From a random sample of 1201 Americans, it was...Ch. 9 - Wimbledon Match Lengths A tennis enthusiast wants...

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For what type of variable does it make sense to construct a confidence interval about a population proportion?

Solution Summary: The author explains that the qualitative variable makes sense to construct the confidence interval about population proportion that can be constructed.

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Chapter 9 Solutions